Two-Fold-Symmetric Magnetoresistance in Single Crystals of Tetragonal BiCh2-Based Superconductor LaO0.5F0.5BiSSe

Abstract

We have investigated the in-plane anisotropy of the c-axis magnetoresistance for single crystals of a BiCh2-based superconductor LaO0.5F0.5BiSSe under in-plane magnetic fields. We observed two-fold symmetry in the c-axis magnetoresistance in the ab-plane of LaO0.5F0.5BiSSe while the crystal possessed a tetragonal square plane with four-fold symmetry. The observed symmetry lowering in magnetoresistance from the structural symmetry may be related to the nematic states, which have been observed in the superconducting states of several unconventional superconductors.

11 pages, 3 figures, supplemental materials (4 figures and 2 tables)

References in corpus (13)

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• Stabilization of high-Tc phase of BiS2-based superconductor LaO0.5F0.5BiS2 using high-pressure synthesis
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• Weak phonon-mediated pairing in BiS${}_2$ superconductor from first principles
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• Site Selectivity on Chalcogen Atoms in Superconducting La(O,F)BiSSe
• Indication of unconventional superconductivity in layered bismuth chalcogenide superconductor LaO0.6F0.4Bi(S,Se)2 revealed by Se isotope effect
• Possible three-dimensional nematic odd-parity superconductivity in Sr${}_2$RuO${}_4$
• Superconducting gap symmetry of the BiS${}_2$-based superconductor LaO${}_{0.5}$F${}_{0.5}$BiSSe elucidated through specific heat measurement
• Anisotropic two-gap superconductivity and the absence of a Pauli paramagnetic limit in single-crystalline LaO${}_{0.5}$F${}_{0.5}$BiS${}_2$

Cited by in corpus (9)

• Two-fold symmetry of in-plane magnetoresistance anisotropy in the superconducting states of BiCh2-based LaO0.9F0.1BiSSe single crystal
• Structural phase diagram of LaO1-xFxBiSSe: suppression of the structural phase transition by partial F substitutions
• Possible pairing mechanism switching driven by structural symmetry breaking in BiS2-based layered superconductors
• Lattice Anharmonicity in BiS2-Based Layered Superconductor RE(O,F)BiS2 (RE = La, Ce, Pr, Nd)
• Bulk superconductivity induced by Se substitution in self-doped BiCh2-based compound CeOBiS2-xSex
• Investigation of superconducting properties and possible nematic superconductivity in self-doped BiCh2-based superconductor CeOBiS1.7Se0.3
• Pressure tuning of localization and superconductivity in LaOPbBiS${}_3$ and La${}_2$O${}_2$Bi${}_3$AgS${}_6$
• Pb Substitution Effects on Lattice and Electronic System of the BiS2-based Superconductors La(O F)BiS2
• Investigation of in-plane anisotropy of c-axis magnetoresistance for BiCh2-based layered superconductor NdO0.7F0.3BiS2