Signatures of the topological s ^+- superconducting order parameter in the type-II Weyl semimetal T _d-MoTe₂.

ABSTRACT: In its orthorhombic T _d polymorph, MoTe₂ is a type-II Weyl semimetal, where the Weyl fermions emerge at the boundary between electron and hole pockets. Non-saturating magnetoresistance and superconductivity were also observed in T _d-MoTe₂. Understanding the superconductivity in T _d-MoTe₂, which was proposed to be topologically non-trivial, is of eminent interest. Here, we report high-pressure muon-spin rotation experiments probing the temperature-dependent magnetic penetration depth in T _d-MoTe₂. A substantial increase of the superfluid density and a linear scaling with the superconducting critical temperature T _c is observed under pressure. Moreover, the superconducting order parameter in T

SUBMITTER: Guguchia Z 

PROVIDER: S-EPMC5651900 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature