Energy gap structure of layered superconductors

Samuel H. Liu; Richard A. Klemm

doi:10.1117/12.179169

29 June 1994 Energy gap structure of layered superconductors

Samuel H. Liu, Richard A. Klemm

Proceedings Volume 2157, Superconducting Superlattices and Multilayers; (1994) https://doi.org/10.1117/12.179169
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

We report the energy gap structure and density-of-states (DOS) of a model layered superconductor with one superconducting layer and one normal layer in a unit cell along the c- axis. In the physically interesting parameter range where the interlayer hopping strengths of the quasiparticles are comparable to the critical temperature, the peaks in the DOS curve do not correspond to the order parameter (OP) of the superconducting layer, but depend on the OP and the band dispersion in the c-direction in a complex manner. In contrast to a BCS superconductor, the DOS of layered systems have logarithmic singularities. Our simulated tunneling characteristics bear close resemblance to experimental results.

Citation Download Citation

Samuel H. Liu and Richard A. Klemm "Energy gap structure of layered superconductors", Proc. SPIE 2157, Superconducting Superlattices and Multilayers, (29 June 1994); https://doi.org/10.1117/12.179169

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