London Penetration Depth, Fermi Velocity and Superconducting Transition Temperature in Metals with Flat Fermi Surfaces

D K Wohlleben

doi:10.1007/978-94-011-2462-1_1

London Penetration Depth, Fermi Velocity and Superconducting Transition Temperature in Metals with Flat Fermi Surfaces

D K Wohlleben

https://doi.org/10.1007/978-94-011-2462-1_1

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Publication Date: Jan 1, 1992

Affiliation: University of Cologne

#Flat Fermi Surfaces #London Penetration Depth + Show 8 more

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Abstract

The adiabatic induction of currents is studied in metals with flat Fermi surfaces. A relation between the London penetration depth λ and the Fermi velocity vF is derived and evaluated for YBaCuO. The phenomenological Ansatz 2△=hvF/λ leads to a quantitative fit of the Tc(λ) relationship found by muon spin resonance for the high temperature superconductors with weak elastic defect scattering.

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