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Azarevich A, Glushkov V, Demishev S, Bogach A, Voronov V, Gavrilkin S, Shitsevalova N, Filipov V, Gabáni S, Kačmarčík J, Flachbart K, Sluchanko N. Evidence of symmetry lowering in antiferromagnetic metal TmB 12with dynamic charge stripes. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 34:065602. [PMID: 34724649 DOI: 10.1088/1361-648x/ac3536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 11/01/2021] [Indexed: 06/13/2023]
Abstract
Precise angle-resolved magnetoresistance (ARMR) and magnetization measurements have revealed (i) strong charge transport and magnetic anisotropy and (ii) emergence of a huge number of magnetic phases in the ground state of isotopically11B-enriched single crystals of TmB12antiferromagnetic (AF) metal with fcc crystal structure and dynamic charge stripes. We analyze for the first time the angularH-φphase diagrams of AF state of Tm11B12reconstructed from experimental ARMR and magnetization data arguing that the symmetry lowering leads to the appearance of several radial phase boundaries between different phases in the AF state. It is proposed that the suppression of the indirect Ruderman-Kittel-Kasuya-Yosida (RKKY) exchange along ⟨110⟩ directions between nearest neighboring magnetic moments of Tm3+ions and subsequent redistribution of conduction electrons to quantum fluctuations of the electron density (dynamic stripes) are the main factors responsible for the anisotropy. Essential (more than 25% atT= 2 K) anisotropy of the Neel field in the (110) plane was found in Tm11B12unlike to isotropic AF-P boundary in theH-φphase diagrams of Ho11B12. Magnetoresistance components are discussed in terms of charge carrier scattering on the spin density wave, itinerant ferromagnetic nano-domains and on-site Tm3+spin fluctuations.
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Affiliation(s)
- A Azarevich
- Prokhorov General Physics Institute of Russian Academy of Sciences, 38 Vavilov str., Moscow 119991, Russia
- Moscow Institute of Physics and Technology, 9 Institutskiy per., Dolgoprudny, Moscow Region 141701, Russia
| | - V Glushkov
- Prokhorov General Physics Institute of Russian Academy of Sciences, 38 Vavilov str., Moscow 119991, Russia
| | - S Demishev
- Prokhorov General Physics Institute of Russian Academy of Sciences, 38 Vavilov str., Moscow 119991, Russia
| | - A Bogach
- Prokhorov General Physics Institute of Russian Academy of Sciences, 38 Vavilov str., Moscow 119991, Russia
| | - V Voronov
- Prokhorov General Physics Institute of Russian Academy of Sciences, 38 Vavilov str., Moscow 119991, Russia
| | - S Gavrilkin
- Lebedev Physical Institute of Russian Academy of Sciences, 53 Leninsky Avenue, 119991 Moscow, Russia
| | - N Shitsevalova
- Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, 3 Krzhizhanovsky str., Kyiv 03680, Ukraine
| | - V Filipov
- Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, 3 Krzhizhanovsky str., Kyiv 03680, Ukraine
| | - S Gabáni
- Institute of Experimental Physics, Slovak Academy of Sciences, 47 Watsonova, 04001 Košice, Slovakia
| | - J Kačmarčík
- Institute of Experimental Physics, Slovak Academy of Sciences, 47 Watsonova, 04001 Košice, Slovakia
| | - K Flachbart
- Institute of Experimental Physics, Slovak Academy of Sciences, 47 Watsonova, 04001 Košice, Slovakia
| | - N Sluchanko
- Prokhorov General Physics Institute of Russian Academy of Sciences, 38 Vavilov str., Moscow 119991, Russia
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Akutsu H, Ohnishi R, Yamada JI, Nakatsuji S, Turner SS. Novel Bis(ethylenedithio)tetrathiafulvalene-Based Organic Conductor with 1,1‘-Ferrocenedisulfonate. Inorg Chem 2007; 46:8472-4. [PMID: 17845035 DOI: 10.1021/ic701392z] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF)-based salt with a ferrocenyl moiety, alpha' ''-(BEDT-TTF)(4)(Fe(C(5)H(4)SO(3))(2)).6H(2)O, has been prepared. The ferrocenyl part of this salt is neutral and diamagnetic, but the magnetic susceptibility is well modeled by a Curie-Weiss law with C = 0.142 emu.K.mol(-1) (approximately 1/3 of s = 1/2 spin). The spin is likely to be localized on the donor layer because of its unique charge disproportionation.
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Affiliation(s)
- Hiroki Akutsu
- Graduate School of Material Science, University of Hyogo, 3-2-1 Kouto, Ako-gun, Hyogo 678-1297, Japan.
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Blundell SJ. Muon-Spin Rotation Studies of Electronic Properties of Molecular Conductors and Superconductors. Chem Rev 2004; 104:5717-36. [PMID: 15535666 DOI: 10.1021/cr030632e] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephen J Blundell
- Department of Physics, Oxford University, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom.
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