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

Junren Shi; Jinming Dong; D. Y. Xing; Z. D. Wang

doi:10.1103/PhysRevB.56.14822

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

Junren Shi, Jinming Dong, D. Y. Xing, Z. D. Wang

DOI 10.1103/PhysRevB.56.14822 · Physical Review B

T1

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Abstract

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 2π-period component of the conductance oscillation decays with the misorientation angle α and vanishes at α=π/4 in contradiction to the s-wave case, from which a method is proposed to identify unambiguously the pairing symmetry of the high-Tc superconductors.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown