Conductance oscillation of a mesoscopic normal metal spanning unconventional and conventional superconductors

Article

关键词: D-WAVE SUPERCONDUCTIVITY;    HIGH-TEMPERATURE SUPERCONDUCTORS;    GINZBURG-LANDAU EQUATIONS;    ORDER-PARAMETER;    PAIRING SYMMETRY;    VORTEX STRUCTURE;    GAP ANISOTROPY;    S-WAVE;    YBA2CU3O7-DELTA;    TRANSPORT;   

DOI  :  10.1103/PhysRevB.56.14822

来源: SCIE

【 摘 要 】

We present a theory for the conductance of a mesoscopic normal metal spanning two superconductors, in which an analytical expression of the conductance is formulated. It is found that the conductance oscillates with the phase difference of Two superconductors periodically. When one of the superconductors has a d-wave symmetry, the 2 pi-period component of the conductance oscillation decays with the misorientation angle cr and vanishes at alpha=pi/4 in contradiction to the a-wave case, from which a method is proposed to identify unambiguously the pairing symmetry of the high-T-c, superconductors.

【 授权许可】

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