Spin susceptibility of the topological superconductor UPt3 from polarized neutron diffraction

Article

关键词: ODD-PARITY SUPERCONDUCTIVITY;    UPPER CRITICAL-FIELD;    PT-195 KNIGHT-SHIFT;    TRIPLET SUPERCONDUCTIVITY;    ORDER-PARAMETER;    SINGLE-CRYSTALS;    PHASES;    SYMMETRY;    SR2RUO4;    IDENTIFICATION;   

DOI  :  10.1103/PhysRevB.96.041111

来源: SCIE

【 摘 要 】

Experiment and theory indicate that UPt3 is a topological superconductor in an odd-parity state, based in part from the temperature independence of the NMR Knight shift. However, quasiparticle spin-flip scattering near a surface, where the Knight shift ismeasured, might be responsible. We use polarized neutron scattering to measure the bulk susceptibility with H parallel to c, finding consistency with the Knight shift but inconsistency with theory for this field orientation. We infer that neither spin susceptibility nor a Knight shift are a reliable indication of odd parity.

【 授权许可】

Free