Colossal transverse magnetoresistance due to nematic superconducting phase fluctuations in a copper oxide.

ABSTRACT: Electronic anisotropy ("nematicity") has been detected in cuprate superconductors by various experimental techniques. Using angle-resolved transverse resistance (ARTR) measurements, a very sensitive and background-free technique that can detect 0.5% anisotropy in transport, we have observed it also in La_2-xSr_xCuO₄ (LSCO) for 0.02 ≤ x ≤ 0.25. A central enigma in LSCO is the rotation of the nematic director (orientation of the largest longitudinal resistance) with temperature; this has not been seen before in any material. Here, we address this puzzle by measuring the angle-resolved transverse magnetoresistance (ARTMR) in LSCO. We report the discovery of colossal transverse magnetoresistance (CTMR)-an order-of-magnitude drop in the transverse resistivi

SUBMITTER: Wardh J 

PROVIDER: S-EPMC10438889 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature