Surface state and normal layer effects in high-Tc superconductors

Richard A. Klemm; Marko Ledvij; Samuel H. Liu

doi:10.1117/12.250261

5 July 1996 Surface state and normal layer effects in high-T_c superconductors

Richard A. Klemm, Marko Ledvij, Samuel H. Liu

Proceedings Volume 2697, Oxide Superconductor Physics and Nano-Engineering II; (1996) https://doi.org/10.1117/12.250261
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

In addition to the conducting CuO₂ (S) layers, most high-T_c superconductors also contain other conducting (N) layers, which are only superconducting due to the proximity effect. The combination of S and N layers can give rise to complicated electronic densities of states, leading to quasilinear penetration depth and NMR relaxation rate behavior at low temperatures. Surface states can also complicate the analysis of tunneling and photoemission measurements. Moreover, geometrical considerations and inhomogeneously trapped flux are possible explanations of the paramagnetic Meissner effect and of corner and ring SQUID experiments. Hence, all of the above experiments could be consistent with isotropic s-wave superconductivity within the S-layers.

Citation Download Citation

Richard A. Klemm, Marko Ledvij, and Samuel H. Liu "Surface state and normal layer effects in high-T_c superconductors", Proc. SPIE 2697, Oxide Superconductor Physics and Nano-Engineering II, (5 July 1996); https://doi.org/10.1117/12.250261

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