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Title: Temperature-dependent anisotropies of upper critical field and London penetration depth

Abstract

We show on a few examples of one-band materials with spheroidal Fermi surfaces and anisotropic order parameters that anisotropies γH of the upper critical field and γλ of the London penetration depth depend on temperature, a feature commonly attributed to multiband superconductors. The parameters γH and γλ may have opposite temperature dependences or may change in the same direction depending on the Fermi-surface shape and on the character of the gap nodes. For two-band systems, the behavior of anisotropies is affected by the ratios of bands densities of states, Fermi velocities, anisotropies, and order parameters. We investigate in detail the conditions determining the directions of temperature dependences of the two anisotropy factors

Authors:
; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division; USDOE
OSTI Identifier:
1557244
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 100; Journal Issue: 1
Country of Publication:
United States
Language:
English

Citation Formats

Kogan, V. G., Prozorov, R., and Koshelev, A. E. Temperature-dependent anisotropies of upper critical field and London penetration depth. United States: N. p., 2019. Web. doi:10.1103/PhysRevB.100.014518.
Kogan, V. G., Prozorov, R., & Koshelev, A. E. Temperature-dependent anisotropies of upper critical field and London penetration depth. United States. doi:10.1103/PhysRevB.100.014518.
Kogan, V. G., Prozorov, R., and Koshelev, A. E. Thu . "Temperature-dependent anisotropies of upper critical field and London penetration depth". United States. doi:10.1103/PhysRevB.100.014518.
@article{osti_1557244,
title = {Temperature-dependent anisotropies of upper critical field and London penetration depth},
author = {Kogan, V. G. and Prozorov, R. and Koshelev, A. E.},
abstractNote = {We show on a few examples of one-band materials with spheroidal Fermi surfaces and anisotropic order parameters that anisotropies γH of the upper critical field and γλ of the London penetration depth depend on temperature, a feature commonly attributed to multiband superconductors. The parameters γH and γλ may have opposite temperature dependences or may change in the same direction depending on the Fermi-surface shape and on the character of the gap nodes. For two-band systems, the behavior of anisotropies is affected by the ratios of bands densities of states, Fermi velocities, anisotropies, and order parameters. We investigate in detail the conditions determining the directions of temperature dependences of the two anisotropy factors},
doi = {10.1103/PhysRevB.100.014518},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 1,
volume = 100,
place = {United States},
year = {2019},
month = {7}
}