Response of FeSe to in-plane anisotropic strain

ORAL

Abstract

By affixing thin single crystals of FeSe to rigid sample carriers and then applying uniaxial stress to the carrier, we apply in-plane uniaxial strains of up to ~0.7% to FeSe. Above the structural transition temperature Ts, anisotropic strain drives partial polarization of the nematic order, and a corresponding strong resistive anisotropy [1, 2]. However the resistive anisotropy saturates rapidly as strain is applied, and the resistivity then varies nonmonotonically for compressions above ~0.3%. Below Ts, the extrinsic contribution to the resistance from twin boundaries can be identified. The twin boundaries are weakly pinned and can be partially annealed, allowing the intrinsic elastoresistivity below Ts to be resolved.

[1] H.-H. Kuo, J.-H. Chu, J. C. Palmstrom, S. A. Kivelson, and I. R. Fisher, Science 352, 958 (2016).
[2] S. Hosoi et al, Proc. Nat. Acad. Sciences 113, 8139 (2016).

*Max Planck Society

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Presenters

  • Clifford Hicks

    • Max Planck Institute for Chemical Physics of Solids

Authors

  • Clifford Hicks

    • Max Planck Institute for Chemical Physics of Solids

  • Jack Bartlett

    • Max Planck Institute for Chemical Physics of Solids

  • Alexander Steppke

    • Max-Planck-Institut for Chemical Physics of Solids
    • Max Planck Institute for Chemical Physics of Solids

  • Suguru Hosoi

    • Univ of Tokyo-Kashiwanoha
    • Osaka University

  • Takasada Shibauchi

    • University of Tokyo
    • Univ of Tokyo-Kashiwanoha
    • Advanced Materials Science, University of Tokyo
    • Department of Advanced Materials Science, University of Tokyo
    • Department of Advanced Material Science, University of Tokyo
    • Dept. Adv. Mat. Sci., Univ. Tokyo
    • Tokyo University

  • Andrew Mackenzie

    • Max-Planck-Institute for Chemical Physics of Solids
    • Max Planck Institute for Chemical Physics of Solids
    • Max Planck Institute for Chemical Physics of Solids, Dresden,Germany
    • Max Planck Institute for Chemical Physics of Solids, Dresden, Germany
    • Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
    • Max-Planck-Institut for Chemical Physics of Solids
    • Physics of Quantum Materials, Max Planck Institute of Chemical Physics of Solids