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Elastoresistivity and elastocaloric effect in the kagome metal KV<sub>3</sub>Sb<sub>5</sub>

ORAL

Abstract

The kagome metal AV3Sb5 (A = K, Rb, Cs) family has attracted significant interest due to the unconventional charge density wave (CDW), giant anomalous Hall effect without long-range magnetic order, and superconductivity at low temperatures [1, 2]. Our previous elastoresistivity and elastocaloric effect measurements have demonstrated that the system is dominated by isotropic response in CsV3Sb5, which is consistent with an isotropic vortex state in superconducting phase reported by recent neutron scattering [3,4]. Although the KV3Sb5 shares similar phase diagrams with CsV3Sb5 under hydrostatic pressure, it is not clear whether reducing the c lattice constant with the K atom can yield new correlations. Here, we examine the elastoresistivity and elastocaloric effect in KV3Sb5 below the CDW transition temperature and will discuss the relationship between the Cs compound.

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Publication: [1] Ortiz, B. R. et al. Physical Review Materials 3, 94407 (2019).<br>[2]Wilson, SD et al. Nature Reviews Materials, 1-13 (2024)<br>[3] Liu et al. Phys. Rev. X 14, 031015 (2024)<br>[4] Xie et al. Nature Communications 15, 6467 (2024)

Presenters

  • Zhaoyu Liu

    Rice University

Authors

  • Zhaoyu Liu

    Rice University

  • Andrea C Salinas

    University of California, Santa Barbara, University of California Santa Barbara, University of Maryland College Park

  • Elliott W Rosenberg

    University of Washington

  • Jonathan M. DeStefano

    University of Washington

  • Chaowei Hu

    University of Washington, University of California, Los Angeles

  • Yue Shi

    University of Washington

  • Xiaodong Xu

    University of Washington

  • Stephen D Wilson

    University of California, Santa Barbara, Materials Department, University of California, Santa Barbara, CA 93106-5050, U.S.A., University of California at Santa Babara

  • Pengcheng Dai

    Rice University

  • Jiun-Haw Chu

    University of Washington