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Unconventional slowing down of electronic recovery in photoexcited charge-ordered La 1/3Sr 2/3FeO 3. Nat Commun 2018; 9:1799. [PMID: 29728580 PMCID: PMC5935711 DOI: 10.1038/s41467-018-04199-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 04/11/2018] [Indexed: 12/03/2022] Open
Abstract
The coupling of ordered electronic phases with lattice, spin, and orbital degrees of freedom are of central interest in strongly correlated systems. Their interplay has been intensively studied from femtosecond to picosecond time scales, while their dynamics beyond nanoseconds are usually assumed to follow lattice cooling. Here, we report an unusual slowing down of the recovery of an electronic phase across a first-order phase transition. Following optical excitation, the recovery time of both transient optical reflectivity and X-ray diffraction intensity from the charge-ordered superstructure in a La1/3Sr2/3FeO3 thin film increases by orders of magnitude as the sample temperature approaches the phase transition temperature. In this regime, the recovery time becomes much longer than the lattice cooling time. The combined experimental and theoretical investigation shows that the slowing down of electronic recovery corresponds to the pseudo-critical dynamics that originates from magnetic interactions close to a weakly first-order phase transition. Unusual electronic behavior can emerge in complex oxides due to strong coupling between charge, magnetic and lattice degrees of freedom. Zhu et al. observe separation of electronic and lattice equilibration times in La1/3Sr2/3FeO3 as magnetic interactions make the recovery of charge order much slower than lattice relaxation.
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He RH, Hashimoto M, Karapetyan H, Koralek JD, Hinton JP, Testaud JP, Nathan V, Yoshida Y, Yao H, Tanaka K, Meevasana W, Moore RG, Lu DH, Mo SK, Ishikado M, Eisaki H, Hussain Z, Devereaux TP, Kivelson SA, Orenstein J, Kapitulnik A, Shen ZX. From a single-band metal to a high-temperature superconductor via two thermal phase transitions. Science 2011; 331:1579-83. [PMID: 21436447 DOI: 10.1126/science.1198415] [Citation(s) in RCA: 270] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The nature of the pseudogap phase of cuprate high-temperature superconductors is a major unsolved problem in condensed matter physics. We studied the commencement of the pseudogap state at temperature T* using three different techniques (angle-resolved photoemission spectroscopy, polar Kerr effect, and time-resolved reflectivity) on the same optimally doped Bi2201 crystals. We observed the coincident, abrupt onset at T* of a particle-hole asymmetric antinodal gap in the electronic spectrum, a Kerr rotation in the reflected light polarization, and a change in the ultrafast relaxational dynamics, consistent with a phase transition. Upon further cooling, spectroscopic signatures of superconductivity begin to grow close to the superconducting transition temperature (T(c)), entangled in an energy-momentum-dependent manner with the preexisting pseudogap features, ushering in a ground state with coexisting orders.
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Affiliation(s)
- Rui-Hua He
- Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
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Liu YH, Toda Y, Shimatake K, Momono N, Oda M, Ido M. Direct observation of the coexistence of the pseudogap and superconducting quasiparticles in Bi2Sr2CaCu2O8 + y by time-resolved optical spectroscopy. PHYSICAL REVIEW LETTERS 2008; 101:137003. [PMID: 18851484 DOI: 10.1103/physrevlett.101.137003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2008] [Indexed: 05/26/2023]
Abstract
We report the ultrafast optical response of quasiparticles (QPs) in both the pseudogap (PG) and superconducting (SC) states of an underdoped Bi2Sr2CaCu2O8 + y (Bi2212) single crystal measured with the time-resolved pump-probe technique. At a probe energy variant planck's over omegapr = 1.55 eV, it is found that the reflectivity change DeltaR/R changes its sign at exactly Tc, which allows the direct separation of the charge dynamics of PG and SC QPs. Further systematic investigations indicate that the transient signals associated with PG and SC QPs depend on the probe beam energy and polarization. By tuning them below Tc, two distinct components can be detected simultaneously, providing evidence for the coexistence of PG and SC QPs.
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Affiliation(s)
- Y H Liu
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan.
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Gedik N, Langner M, Langer M, Orenstein J, Ono S, Abe Y, Ando Y. Abrupt transition in quasiparticle dynamics at optimal doping in a cuprate superconductor system. PHYSICAL REVIEW LETTERS 2005; 95:117005. [PMID: 16197037 DOI: 10.1103/physrevlett.95.117005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2005] [Indexed: 05/04/2023]
Abstract
We report time-resolved measurements of the photoinduced change in reflectivity, DeltaR, in the Bi2Sr2Ca(1-y)Dy(y)Cu2O8+delta (BSCCO) system of cuprate superconductors as a function of hole concentration. We find that the kinetics of quasiparticle decay and the sign of DeltaR both change abruptly where the superconducting transition temperature T(c) is maximal. These coincident changes suggest that a sharp transition in quasiparticle dynamics takes place precisely at optimal doping in the BSCCO system.
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Affiliation(s)
- N Gedik
- Physics Department, University of California, Berkeley, Berkeley, California, USA
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Mihailovic D. Optical experimental evidence for a universal length scale for the dynamic charge inhomogeneity of cuprate superconductors. PHYSICAL REVIEW LETTERS 2005; 94:207001. [PMID: 16090273 DOI: 10.1103/physrevlett.94.207001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2004] [Indexed: 05/03/2023]
Abstract
Time-resolved optical experiments can give unique information on the characteristic length scales of dynamic charge inhomogeneity on femtosecond time scales. From data on the effective quasiparticle relaxation time tau(r) in La(2-x)SrxCuO4 and Nd(2-x)Ce(x)CuO4, we derive the temperature and doping dependence of the intrinsic phonon escape length l(e), which can be a direct measure of charge inhomogeneity. Remarkably, a common feature of both p- and n-type cuprates is that, as T --> Tc, l(e) approaches the superconducting coherence length l(e) --> xi(s)0. In the normal state l(e) is found to be in excellent agreement with the mean free path l(m) obtained from the resistivity data and structural coherence lengths l(s) from neutron scattering experiments, implying the existence of complex intrinsic textures on different length scales which may have a profound effect on the functional properties of these materials.
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Affiliation(s)
- D Mihailovic
- Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
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Xu Y, Khafizov M, Satrapinsky L, Kús P, Plecenik A, Sobolewski R. Time-resolved photoexcitation of the superconducting two-gap state in MgB2 thin films. PHYSICAL REVIEW LETTERS 2003; 91:197004. [PMID: 14611605 DOI: 10.1103/physrevlett.91.197004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2002] [Indexed: 05/24/2023]
Abstract
Femtosecond pump-probe studies show that carrier dynamics in MgB2 films is governed by the sub-ps electron-phonon (e-ph) relaxation present at all temperatures, the few-ps e-ph process well pronounced below 70 K, and the sub-ns superconducting relaxation below T(c). The amplitude of the superconducting component versus temperature follows the superposition of the isotropic dirty gap and the three-dimensional pi gap dependences, closing at two different T(c) values. The time constant of the few-ps relaxation exhibits a double divergence at temperatures corresponding to the T(c)'s of the two gaps.
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Affiliation(s)
- Y Xu
- Department of Electrical and Computer Engineering and Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14627-0231, USA
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Misochko OV, Georgiev N, Dekorsy T, Helm M. Two crossovers in the Pseudogap regime of YBa 2Cu 3O (7-delta) superconductors observed by ultrafast spectroscopy. PHYSICAL REVIEW LETTERS 2002; 89:067002. [PMID: 12190603 DOI: 10.1103/physrevlett.89.067002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2001] [Indexed: 05/23/2023]
Abstract
We have investigated the temperature dependence of the optical reflectivity on a femtosecond scale in a near optimally doped YBa 2Cu 3O (7-delta) superconductor. The combined study of the lattice and carrier dynamics at temperatures above T(c) allows us to identify two crossover temperatures in the normal state, giving evidence for an inhomogeneity of the pseudogap regime. These crossovers exhibit a clear hysteresis behavior depending on the direction of temperature change. The carrier and lattice dynamics within the crossover regimes show distinct differences from and similarities to the superconducting state, which may help in choosing between the competing theories for the pseudogap state.
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Affiliation(s)
- O V Misochko
- Institute for Ion Beam Physics and Materials Research, Research Center Rossendorf, P.O. Box 510119, D-01314 Dresden, Germany
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Xiong GC, Zou YH, Xia ZJ, Yuan P, Lian GJ, Gan ZZ. Transient differential reflectivity and nonequilibrium electron relaxation in Y1-x-yPrxCayBa2Cu3O7 thin films. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:12564-12568. [PMID: 9985121 DOI: 10.1103/physrevb.54.12564] [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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Jaekel C, Roskos HG, Kurz H. Emission of picosecond electromagnetic pulses from optically excited superconducting bridges. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:R6889-R6892. [PMID: 9984406 DOI: 10.1103/physrevb.54.r6889] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Holcomb MJ. Finite-temperature real-energy-axis solutions of the isotropic Eliashberg integral equations. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:6648-6660. [PMID: 9986684 DOI: 10.1103/physrevb.54.6648] [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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Frenkel A, Gao F, Liu Y, Whitaker JF, Uher C, Hou SY, Phillips JM. Conductivity peak, relaxation dynamics, and superconducting gap of YBa2Cu3O7 studied by terahertz and femtosecond optical spectroscopies. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:1355-1365. [PMID: 9985408 DOI: 10.1103/physrevb.54.1355] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Thomas TN, Stevens CJ, Choudhary AJ, Ryan JF, Mihailovic D, Mertelj T, Forro L, Wagner G, Evetts JE. Photoexcited carrier relaxation and localization in Bi2Sr2Ca1-yYyCu2O8 and YBa2Cu3O7- delta : A study by femtosecond time-resolved spectroscopy. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:12436-12440. [PMID: 9982877 DOI: 10.1103/physrevb.53.12436] [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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Matsumoto T, Choopun S, Kawai T. Temperature-dependent tunneling spectra of Bi2Sr2CaCu2O8 single crystals with well-defined Bi2Sr2CuO6 epitaxial layers. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:591-602. [PMID: 9979639 DOI: 10.1103/physrevb.52.591] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Groeneveld RH, Sprik R, Lagendijk A. Femtosecond spectroscopy of electron-electron and electron-phonon energy relaxation in Ag and Au. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:11433-11445. [PMID: 9977873 DOI: 10.1103/physrevb.51.11433] [Citation(s) in RCA: 160] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Matsuda K, Hirabayashi I, Kawamoto K, Nabatame T, Tokizaki T, Nakamura A. Femtosecond spectroscopic studies of the ultrafast relaxation process in the charge-transfer state of insulating cuprates. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:4097-4101. [PMID: 9976691 DOI: 10.1103/physrevb.50.4097] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Nettel SJ, MacCrone RK. Generation of coherent phonons and high-Tc superconductivity. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:6395-6397. [PMID: 10011642 DOI: 10.1103/physrevb.49.6395] [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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Hegmann FA, Preston JS. Origin of the fast photoresponse of epitaxial YBa2Cu3O7- delta thin films. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:16023-16039. [PMID: 10008163 DOI: 10.1103/physrevb.48.16023] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Juhasz T, Elsayed-Ali HE, Smith GO, Suárez C, Bron WE. Direct measurements of the transport of nonequilibrium electrons in gold films with different crystal structures. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:15488-15491. [PMID: 10008098 DOI: 10.1103/physrevb.48.15488] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Gong T, Zheng LX, Xiong W, Kula W, Kostoulas Y, Sobolewski R, Fauchet PM. Femtosecond optical response of Y-Ba-Cu-O thin films: The dependence on optical frequency, excitation intensity, and electric current. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:14495-14502. [PMID: 10005802 DOI: 10.1103/physrevb.47.14495] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Reitze DH, Weiner AM, Inam A, Etemad S. Fermi-level dependence of femtosecond response in nonequilibrium high-Tc superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:14309-14312. [PMID: 10003526 DOI: 10.1103/physrevb.46.14309] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Federici JF, Greene BI, Saeta PN, Dykaar DR, Sharifi F, Dynes RC. Direct picosecond measurement of photoinduced Cooper-pair breaking in lead. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:11153-11156. [PMID: 10002986 DOI: 10.1103/physrevb.46.11153] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Albrecht W, Kruse T, Kurz H. Time-resolved observation of coherent phonons in superconducting YBa2Cu3O7- delta thin films. PHYSICAL REVIEW LETTERS 1992; 69:1451-1454. [PMID: 10047220 DOI: 10.1103/physrevlett.69.1451] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Juhasz T, Elsayed-Ali HE, Hu XH, Bron WE. Time-resolved thermoreflectivity of thin gold films and its dependence on the ambient temperature. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:13819-13822. [PMID: 10001494 DOI: 10.1103/physrevb.45.13819] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Chekalin SV, Farztdinov VM, Golovlyov VV, Letokhov VS, Lozovik YE, Matveets YA, Stepanov AG. Femtosecond spectroscopy of YBa2Cu3O7- delta : Electron-phonon-interaction measurement and energy-gap observation. PHYSICAL REVIEW LETTERS 1991; 67:3860-3863. [PMID: 10044844 DOI: 10.1103/physrevlett.67.3860] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Han SG, Vardeny ZV, Symko OG, Koren G. Quasiparticle relaxation in a high-Tc superconductor. PHYSICAL REVIEW LETTERS 1991; 67:1053. [PMID: 10045062 DOI: 10.1103/physrevlett.67.1053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Eesley GL, Heremans J, Meyer MS, Doll GL. Eesley et al. reply. PHYSICAL REVIEW LETTERS 1991; 67:1054. [PMID: 10045063 DOI: 10.1103/physrevlett.67.1054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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