biostudies-literatureGuguchia ZSwiss National Science Foundation1082https://www.ebi.ac.uk/biostudies/studies/S-EPMC5651900biostudies-literatureUnknown8(1)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 Nature communicationsSignatures of the topological s ^+- superconducting order parameter in the type-II Weyl semimetal T _d-MoTe₂.PMC5651900161980Shermadini ZBanerjee STaniashvili GBillinge SJLBaines CGuguchia ZLuetkens HLee ATGong ZKhasanov RWieteska ARMorenzoni Evon Rohr FShengelaya AAmato AFrandsen BAUemura YJMarianetti CACava RJCheung SCPasupathy ANfalseSignatures of the topological s ^+- superconducting order parameter in the type-II Weyl semimetal T _d-MoTe₂.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 2017-01-01T00:00:00Z2017 Oct2025-04-20T03:41:12.319Z2019-03-27T02:59:37ZS-EPMC56519002905787410.1038/s41467-017-01066-6