Fully gapped s-wave-like superconducting state and electronic structure in Ir0.95Pd0.05Te2 single crystals with strong spin-orbital coupling

Article

关键词: TOPOLOGICAL INSULATORS;    PHASE-TRANSITION;    DIRAC CONE;    BI2SE3;   

DOI  :  10.1103/PhysRevB.89.100501

来源: SCIE

【 摘 要 】

Due to the large spin-orbital coupling in the layered 5d-transition metal chalcogenides compound, the occurrence of superconductivity in doped Ir2-xPdxTe2 offers a good chance to search for possible topological superconducting states in this system. We did comprehensive studies on the superconducting properties and electronic structures of single crystalline Ir0.95Pd0.05Te2 samples. The superconducting gap size, critical fields, and coherence length along different directions were experimentally determined. Macroscopic bulk measurements and microscopic low temperature scanning tunneling spectroscopy results suggest that Ir0.95Pd0.05Te2 possesses a BCS-like s-wave state. No sign of zero bias conductance peak was found in the vortex core at 0.4 K.

【 授权许可】

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