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Mondal A, Dey R, Jelen A, Koželj P, Kuila SK, Pan R, Vrtnik S, Luzar J, Wencka M, Petrović J, Mihor P, Jagličić Z, Meden A, Jana PP, Dolinšek J. Double Helix of Icosahedra Structure and Spin Glass Magnetism of the δ-Co 2.5Zn 17.5-xMn x ( x = 0.4-3.5) Pseudo-Binary Alloys. Inorg Chem 2024; 63:10251-10263. [PMID: 38769094 DOI: 10.1021/acs.inorgchem.4c00686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
We have synthesized δ-Co2.5Zn17.5-xMnx (x = 0.4-3.5) pseudo-binary alloys of 10 different compositions by a high-temperature solid-state synthetic route, determined their crystal structures and the Mn substitution pattern, and estimated the existence range of the δ-phase. The alloys crystallize in two chiral enantiomorphic space groups P62 and P64, where the basic atomic polyhedron of the chiral structure is an icosahedron and the neighboring icosahedra share vertices to form an infinitely long double helix along the hexagonal axis (like in the δ-Co2.5Zn17.5 parent binary phase). The alloys are pure δ-phase up to the Mn content x ≈ 3.5. The Mn atoms partially substitute Zn atoms at particular crystallographic sites located on the icosahedra. The study of magnetism was performed on the Co2.5Zn17.1Mn0.4 alloy with the lowest Mn content. Contrary to the expectation that structural chirality may induce the formation of a nontrivial magnetic state, a spin glass state with no relation to the structural chirality was found. The magnetic sublattice contains all of the necessary ingredients (randomness and frustration) for the formation of a spin glass state. Typical out-of-equilibrium dynamic phenomena of a spin system with broken ergodicity were detected below the spin freezing temperature Tf ≈ 8 K.
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Affiliation(s)
- Amit Mondal
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | - Riju Dey
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | - Andreja Jelen
- J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Primož Koželj
- J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia
| | - Sandip Kumar Kuila
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | - Rahul Pan
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | | | - Jože Luzar
- J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Magdalena Wencka
- J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
- Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, PL-60-179 Poznań, Poland
| | - Julia Petrović
- J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Peter Mihor
- J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Zvonko Jagličić
- Faculty of Civil and Geodetic Engineering, Institute of Mathematics, Physics and Mechanics & University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia
| | - Anton Meden
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Partha Pratim Jana
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | - Janez Dolinšek
- J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia
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Ritchhart A, Chen Z, Behera A, Jeon IR, Chapman KW, Vaikuntanathan S, Anderson JS. Cluster-Spin-Glass Magnetic Behavior and Morphology in the Coordination Polymer Alloys Fe yCo 1-yBTT. J Am Chem Soc 2023; 145:24089-24097. [PMID: 37876220 DOI: 10.1021/jacs.3c07527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
We report the synthesis of a series of pseudo-1D coordination polymer (CP) materials with the formula FeyCo1-yBTT (BTT = 1,3,5-benzenetrithiolate). These materials were structurally characterized by PXRD Rietveld, EXAFS, and PDF analyses, revealing that the CP superstructure enables a continuous and isomorphous alloy between the two homometallic compounds. Lower Fe loadings exhibit emergent spin glass magnetic behavior, such as memory effects and composition-dependent spin glass response time constants ranging from 6.9 × 10-9 s to 1.8 × 10-6 s. These data are consistent with the formation of spin clusters within the lattice. The magnetic behavior in these materials was modeled via replica exchange Monte Carlo simulation, which provides a good match for the experimentally measured spin glassing and magnetic phase transitions. These findings underscore how the rigid superstructure of CP and MOF scaffolds can enable the systematic tuning of physical properties, such as the spin glass behavior described here.
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Affiliation(s)
- Andrew Ritchhart
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Zhihengyu Chen
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
| | - Agnish Behera
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Ie-Rang Jeon
- Université de Rennes, Institut des Sciences Chimiques de Rennes, UMR CNRS 6226, 35042 Rennes, France
| | - Karena W Chapman
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
| | | | - John S Anderson
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
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Koželj P, Jelen A, Dražić G, Vrtnik S, Luzar J, Wencka M, Meden A, Feuerbacher M, Dolinšek J. Complex magnetism of single-crystalline AlCoCrFeNi nanostructured high-entropy alloy. iScience 2023; 26:106894. [PMID: 37260742 PMCID: PMC10227418 DOI: 10.1016/j.isci.2023.106894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 05/01/2023] [Accepted: 05/12/2023] [Indexed: 06/02/2023] Open
Abstract
We have investigated magnetism of the Al28Co20Cr11Fe15Ni26 single-crystalline high-entropy alloy. The material is nanostructured, composed of a B2 matrix with dispersed spherical-like A2 nanoparticles of average diameter 64 nm. The magnetism was studied from 2 to 400 K via direct-current magnetization, hysteresis curves, alternating-current magnetic susceptibility, and thermoremanent magnetization time decay, to determine the magnetic state that develops in this highly structurally and chemically inhomogeneous material. The results reveal that the Cr-free B2 matrix of composition Al28Co25Fe15Ni32 forms a disordered ferromagnetic (FM) state that undergoes an FM transition at TC≈ 390 K. The Al- and Ni-free A2 nanoparticles of average composition Co19Cr56Fe25 adopt a core-shell structure, where the shells of about 2 nm thickness are CoFe enriched. While the shells are FM, the nanoparticle cores are asperomagnetic, classifying into the broad class of spin glasses. Asperomagnetism develops below 15 K and exhibits broken-ergodicity phenomena, typical of magnetically frustrated systems.
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Affiliation(s)
- Primož Koželj
- Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
- University of Ljubljana, Faculty of Mathematics and Physics, Jadranska 19, SI-1000 Ljubljana, Slovenia
| | - Andreja Jelen
- Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Goran Dražić
- National Institute of Chemistry, Department of Materials Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | | | - Jože Luzar
- Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Magdalena Wencka
- Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
- Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, PL-60-179 Poznań, Poland
| | - Anton Meden
- University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna Pot 113, SI-1000 Ljubljana, Slovenia
| | - Michael Feuerbacher
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Janez Dolinšek
- Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
- University of Ljubljana, Faculty of Mathematics and Physics, Jadranska 19, SI-1000 Ljubljana, Slovenia
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Odagaki T. Waiting time dependence of aging. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2023; 35:124001. [PMID: 36657180 DOI: 10.1088/1361-648x/acb4cf] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 01/19/2023] [Indexed: 06/17/2023]
Abstract
Aging phenomena have been observed in many non-equilibrium systems such as polymers and glasses, where physical properties depend on the waiting time between the starting time of observation and the time when the temperature is changed. The aging is classified into two types on the basis of the waiting time dependence of an instantaneous relaxation time: When the relaxation time is always an increasing function of the waiting time, the aging is called Type I and when it depends on the protocol of the temperature change, the aging is called Type II. Aging of a random walk in three dimensions is investigated when the free energy landscape controlling the jump rate responds to temperature change with a delay. It is shown that the intermediate scattering function of the random walk model exhibits Type II aging. It is also shown that the relaxation time of the free energy landscape can be deduced from the waiting time dependence of the instantaneous relaxation time.
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Affiliation(s)
- Takashi Odagaki
- Kyushu University, Fukuoka 819-0395, Japan
- Research Institute for Science Education Inc, Kyoto 603-8346, Japan
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Zhang D, Chen T, Vucelja M, Lee SH, Chern GW. Memory effect and phase transition in a hierarchical trap model for spin glasses. Phys Rev E 2021; 104:064105. [PMID: 35030869 DOI: 10.1103/physreve.104.064105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 11/18/2021] [Indexed: 06/14/2023]
Abstract
We introduce an efficient dynamical tree method that enables us to explicitly demonstrate the thermoremanent magnetization memory effect in a hierarchical energy landscape. Our simulation nicely reproduces the nontrivial waiting-time and waiting-temperature dependences in this nonequilibrium phenomenon. We further investigate the condensation effect, in which a small set of microstates dominates the thermodynamic behavior in the multilayer trap model. Importantly, a structural phase transition of the multilayer tree model is shown to coincide with the onset of the condensation phenomenon. Our results underscore the importance of hierarchical structure and demonstrate the intimate relation between the glassy behavior and structure of barrier trees.
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Affiliation(s)
- Depei Zhang
- Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA
| | - Tianran Chen
- Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA
| | - Marija Vucelja
- Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA
| | - Seung-Hun Lee
- Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA
| | - Gia-Wei Chern
- Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA
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6
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Ghanta S, Das A, Jana PP, Vrtnik S, Gačnik D, Luzar J, Jelen A, Koželj P, Wencka M, Dolinšek J. Structure and Spin-Glass Magnetism of the Mn xNi 2Zn 11-x Pseudobinary γ-Brasses at Low Mn Contents. Inorg Chem 2021; 60:12226-12236. [PMID: 34339187 PMCID: PMC8389805 DOI: 10.1021/acs.inorgchem.1c01418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The pseudobinary MnxNi2Zn11–x γ-brass-type
phases at low
Mn dopant levels (x = 0.1–0.5) were investigated.
Crystal structures were determined for the two loading compositions
of x = 0.3 and 0.5. The structures were solved in
the cubic space group of I43m and are described in close analogy to the Ni2Zn11 parent γ-brass that is based on the 26-atom
cluster, consisting of inner tetrahedron (IT), outer tetrahedron (OT),
octahedron (OH), and cuboctahedron (CO). The refined site occupancies
of the MnxNi2Zn11–x (x = 0.3, 0.5) reveal that the
cluster center, which is empty in the Ni2Zn11, shows a partial occupation by Zn, with a partial depletion of Zn
at the IT sites. The OH sites show a mixed Zn/Mn occupation. The OT
and CO sites remain intact with respect to Ni2Zn11. Magnetic properties were studied for the Mn0.3Ni2Zn10.7 composition. The temperature-dependent zero-field-cooled
and field-cooled magnetization, the ac susceptibility, the M(H) hysteresis curves, the thermoremanent
magnetization, and the memory effect demonstrate typical broken-ergodicity
phenomena of a magnetically frustrated spin system below the spin
freezing temperature Tf ≈ 16 K.
The Mn0.3Ni2Zn10.7 γ-brass
phase classifies as a spin glass, originating predominantly from the
random distribution of diluted Mn moments on the octahedral partial
structure. In a search for new pseudobinary/ternary
γ-brass-type
phases, we synthesized a series of MnxNi2Zn11−x compounds
at low Mn doping levels (x = 0.1−0.5) and
determined the structures for two compositions x =
0.3 and 0.5. Magnetic measurements show that the Mn0.3Ni2Zn11.7 γ-brass is a spin glass.
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Affiliation(s)
- Sivaprasad Ghanta
- Department of Chemistry, Indian Institute of Technology, 721302 Kharagpur, India
| | - Anustoop Das
- Department of Chemistry, Indian Institute of Technology, 721302 Kharagpur, India
| | - Partha Pratim Jana
- Department of Chemistry, Indian Institute of Technology, 721302 Kharagpur, India
| | | | - Darja Gačnik
- J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Jože Luzar
- J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Andreja Jelen
- J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Primož Koželj
- J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.,Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia
| | - Magdalena Wencka
- J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.,Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, PL-60-179 Poznań, Poland
| | - Janez Dolinšek
- J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.,Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia
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7
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Abstract
Glassiness is ubiquitous and diverse in characteristics in nature. Understanding their differences and classification remains a major scientific challenge. Here, we show that scaling of magnetic memories with time can be used to classify magnetic glassy materials into two distinct classes. The systems studied are high temperature superconductor-related materials, spin-orbit Mott insulators, frustrated magnets, and dilute magnetic alloys. Our bulk magnetization measurements reveal that most densely populated magnets exhibit similar memory behavior characterized by a relaxation exponent of \documentclass[12pt]{minimal}
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\begin{document}$$1-n\approx 0.6(1)$$\end{document}1−n≈0.6(1). This exponent is different from \documentclass[12pt]{minimal}
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\begin{document}$$1-{\boldsymbol{n}}\approx 1/3$$\end{document}1−n≈1/3 of dilute magnetic alloys that was ascribed to their hierarchical and fractal energy landscape, and is also different from \documentclass[12pt]{minimal}
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\begin{document}$$1-{\boldsymbol{n}}=1$$\end{document}1−n=1 of the conventional Debye relaxation expected for a spin solid, a state with long range order. Furthermore, our systematic study on dilute magnetic alloys with varying magnetic concentration exhibits crossovers among the two glassy states and spin solid.
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Abstract
The notion of complex energy landscape underpins the intriguing dynamical behaviors in many complex systems ranging from polymers, to brain activity, to social networks and glass transitions. The spin glass state found in dilute magnetic alloys has been an exceptionally convenient laboratory frame for studying complex dynamics resulting from a hierarchical energy landscape with rugged funnels. Here, we show, by a bulk susceptibility and Monte Carlo simulation study, that densely populated frustrated magnets in a spin jam state exhibit much weaker memory effects than spin glasses, and the characteristic properties can be reproduced by a nonhierarchical landscape with a wide and nearly flat but rough bottom. Our results illustrate that the memory effects can be used to probe different slow dynamics of glassy materials, hence opening a window to explore their distinct energy landscapes.
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Jazbec S, Jagličić Z, Vrtnik S, Wencka M, Feuerbacher M, Heggen M, Roitsch S, Dolinšek J. Geometric origin of magnetic frustration in the μ-Al₄Mn giant-unit-cell complex intermetallic. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:045702. [PMID: 21406894 DOI: 10.1088/0953-8984/23/4/045702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The structurally ordered μ-Al(4)Mn complex intermetallic phase with 563 atoms in the giant unit cell shows the typical broken-ergodicity phenomena of a magnetically frustrated spin system. The low-field zero-field-cooled and field-cooled magnetic susceptibilities show splitting below the spin freezing temperature T(f) = 2.7 K. The ac susceptibility exhibits a frequency-dependent cusp, associated with a frequency-dependent freezing temperature T(f)(ν). The decay of the thermoremnant magnetization is logarithmically slow in time and shows a dependence on the aging time t(w) and the cooling field H(fc) typical of an ultraslow out-of-equilibrium dynamics of a nonergodic spin system that approaches thermal equilibrium, but can never reach it on the experimentally accessible time scale. The above features classify the μ-Al(4)Mn complex intermettalic among spin glasses. The origin of frustration of magnetic interactions was found to be geometrical due to the distribution of a significant fraction of Mn spins on triangles with antiferromagnetic coupling. The μ-Al(4)Mn phase is a geometrically frustrated spin glass.
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Affiliation(s)
- S Jazbec
- J Stefan Institute, University of Ljubljana, Jamova 39, SI-1000 Ljubljana, Slovenia
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Cordero F, Craciun F, Franco A, Piazza D, Galassi C. Memory of multiple aging stages above the freezing temperature in the Relaxor ferroelectric PLZT. PHYSICAL REVIEW LETTERS 2004; 93:097601. [PMID: 15447139 DOI: 10.1103/physrevlett.93.097601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2003] [Indexed: 05/24/2023]
Abstract
The dynamic dielectric susceptibility and the elastic compliance of the relaxor ferroelectric lanthanum lead zirconate titanate (PLZT) 9/65/35 have been measured under different cooling and heating protocols in order to study aging and memory. The memory of multiple aging stages at different temperatures has been found (several dips in the susceptibility curves on heating), as in spin glass systems below the glass transition. Remarkably, in PLZT the memory of several aging stages is retained also above the freezing temperature deduced from the dynamic susceptibilities. The results are discussed in light of the existing models of aging and memory in spin and dipolar glasses.
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Affiliation(s)
- F Cordero
- CNR, Istituto di Acustica and Istituto dei Sistemi Complessi, Area della Ricerca di Roma-Tor Vergata, Via del Fosso del Cavaliere 100, I-00133 Roma, Italy
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11
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Colla EV, Chao LK, Weissman MB, Viehland DD. Aging in a relaxor ferroelectric: scaling and memory effects. PHYSICAL REVIEW LETTERS 2000; 85:3033-3036. [PMID: 11005996 DOI: 10.1103/physrevlett.85.3033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2000] [Indexed: 05/23/2023]
Abstract
A crossover as a function of temperature is found in the zero-field aging properties of the relaxor ferroelectric Pb(Mg(1/3)Nb(2/3))O3. Below a temperature near which nonlinear susceptibility has indicated a suspected phase transition, the time-frequency dependence shows simple scale-independent behavior resembling that for spin glasses. As in spin glasses, high temperature aging is stable as further aging occurs at lower temperature, but not vice versa, indicating hierarchical state arrangement. A more general interpretation of such effects is briefly discussed.
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Affiliation(s)
- E V Colla
- Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801-3080, USA
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12
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Vaknin A, Ovadyahu Z, Pollak M. Aging effects in an anderson insulator. PHYSICAL REVIEW LETTERS 2000; 84:3402-3405. [PMID: 11019100 DOI: 10.1103/physrevlett.84.3402] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/1999] [Indexed: 05/23/2023]
Abstract
Aging, commonly observed in glasses, is a manifestation of breakdown of time-translational invariance. Here we demonstrate experimentally aging effects in the electronic system of an Anderson insulator. The aging phenomenon in the electron glass appears to be much less sensitive to temperature than in other systems. The differences in the behavior of the electron glass and a spin glass system are discussed in terms of some microscopic differences between the two systems.
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Affiliation(s)
- A Vaknin
- The Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel
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13
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Newman CM, Stein DL. Metastable states in spin glasses and disordered ferromagnets. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1999; 60:5244-60. [PMID: 11970394 DOI: 10.1103/physreve.60.5244] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/1999] [Indexed: 04/18/2023]
Abstract
We study analytically M-spin-flip stable states in disordered short-ranged Ising models (spin glasses and ferromagnets) in all dimensions and for all M. Our approach is primarily dynamical, and is based on the convergence of sigma(t), a zero-temperature dynamical process with flips of lattice animals up to size M and starting from a deep quench, to a metastable limit sigma(infinity). The results (rigorous and nonrigorous, in infinite and finite volumes) concern many aspects of metastable states: their numbers, basins of attraction, energy densities, overlaps, remanent magnetizations, and relations to thermodynamic states. For example, we show that their overlap distribution is a delta function at zero. We also define a dynamics for M=infinity, which provides a potential tool for investigating ground state structure.
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Affiliation(s)
- C M Newman
- Courant Institute of Mathematical Sciences, New York University, 251 Mercer Street, New York, New York 10012, USA
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14
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Cizeau P, Bouchaud JP. Mean field theory of dilute spin-glasses with power-law interactions. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0305-4470/26/5/003] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Rieger H. Nonequilibrium dynamics and aging in the three-dimensional Ising spin-glass model. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0305-4470/26/15/001] [Citation(s) in RCA: 106] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Kisker J, Rieger H, Schreckenberg H. Escape from metastability via aging: non-equilibrium dynamics in a one-dimensional Ising model. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0305-4470/27/22/002] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Joh YG, Orbach R, Hammann J. Spin Glass Dynamics under a Change in Magnetic Field. PHYSICAL REVIEW LETTERS 1996; 77:4648-4651. [PMID: 10062591 DOI: 10.1103/physrevlett.77.4648] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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21
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Walton D. Relaxation and aging in Ising systems. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:14980-14986. [PMID: 9983292 DOI: 10.1103/physrevb.53.14980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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22
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Newman CM, Stein DL. Non-mean-field behavior of realistic spin glasses. PHYSICAL REVIEW LETTERS 1996; 76:515-518. [PMID: 10061476 DOI: 10.1103/physrevlett.76.515] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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23
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Kenning GG, Joh YG, Chu D, Orbach R. Thermoremanent magnetization as a probe of the field-quenched states in spin glasses. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:3479-3483. [PMID: 9981470 DOI: 10.1103/physrevb.52.3479] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Meyer KA, Weissman MB. Mesoscopic electrical noise from spins in Au1-xFex. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:8221-8229. [PMID: 9977432 DOI: 10.1103/physrevb.51.8221] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Colla EV, Koroleva EY, Okuneva NM, Vakhrushev SB. Long-time relaxation of the dielectric response in lead magnoniobate. PHYSICAL REVIEW LETTERS 1995; 74:1681-1684. [PMID: 10059090 DOI: 10.1103/physrevlett.74.1681] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Djurberg C, Granberg P, Mattsson J, Nordblad P. Overlap length in spin glasses imposed by magnetic field perturbations. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:15775-15778. [PMID: 9975943 DOI: 10.1103/physrevb.50.15775] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Sibani P, Schriver P. Local phase-space structure and low-temperature dynamics of short-range Ising spin glasses. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:6667-6671. [PMID: 10009386 DOI: 10.1103/physrevb.49.6667] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Andersson JO, Mattsson J, Nordblad P. Overlap length in a Cu-Mn spin glass probed by ac susceptibility. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:13977-13980. [PMID: 10007800 DOI: 10.1103/physrevb.48.13977] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Wolf M, Gey W. Strong magnetic relaxation toward diamagnetism and evidence for glassy behavior in YBa2Cu3O7- delta single crystals close to Tc. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:6707-6710. [PMID: 10009238 DOI: 10.1103/physrevb.48.6707] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Lubecka M, Maksymowicz LJ. Temperature dependence of interactions in diluted magnetic semiconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:951-956. [PMID: 10007954 DOI: 10.1103/physrevb.48.951] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Weissman MB, Wolynes PG. Hopfield models and spin-density waves in metallic spin glasses. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:14209-14212. [PMID: 10003498 DOI: 10.1103/physrevb.46.14209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Andersson J, Mattsson J, Svedlindh P. Monte Carlo studies of Ising spin-glass systems: Aging behavior and crossover between equilibrium and nonequilibrium dynamics. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:8297-8304. [PMID: 10002591 DOI: 10.1103/physrevb.46.8297] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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