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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

London penetration depth at zero temperature and near the superconducting transition

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Author(s):
Kogan, V. G. [1] ; Tanatar, M. A. [2, 1] ; Prozorov, R. [2, 1]
Total Authors: 3
Affiliation:
[1] Ames Lab DOE, Ames, IA 50011 - USA
[2] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 - USA
Total Affiliations: 2
Document type: Journal article
Source: Physical Review B; v. 101, n. 10 MAR 19 2020.
Web of Science Citations: 0
Abstract

A simple relation is established between the zero-T penetration depth lambda(0) and the slope of lambda(-2) (T) near T-c similar to Helfand-Werthamer's relation for H-c2(0) and the slope of H-c2(T) at T-c for the isotropic s-wave case with nonmagnetic scattering {[}E. Helfand and N. R. Werthamer, Phys. Rev. 147, 288 (1966)]. When the scattering parameter rho = (h) over barv/2 pi T(c)l (v is the Fermi velocity and l is the mean free path) varies from 1 to 10, the coefficient of proportionality between lambda(-2)(0) and T-c(d lambda(-2)/dT)(Tc) changes from 0.43 to 0.38. Combining this relation with the Rutgers thermodynamic identity, one can express lambda(0) in terms of the slope (dH(c2)/dT)(Tc) and the density of states. (AU)

FAPESP's process: 17/10581-1 - Emergent phenomena in reduced dimension systems
Grantee:Pascoal Jose Giglio Pagliuso
Support type: Research Projects - Thematic Grants
FAPESP's process: 12/04870-7 - Studies of novel complex and advanced materials
Grantee:Pascoal Jose Giglio Pagliuso
Support type: Research Projects - Thematic Grants