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Specific heat and critical field for some iron-containing superconductors

Specific heat and critical field for some iron-containing superconductors Specific heat measurements on superconductingLu 2 Fe 3 Si 5 reveal a strong sample dependence of the residual specific heat contribution γ s , belowT c , effectively ruling out the possibility of a two-band model. Upper critical fieldH c2 results for Lu2Fe3Si5, Sc2Fe3Si5, and LaFe4P12 show a very largeH c2 with an unusual temperature dependence for Lu2Fe3Si5, in contrast to the latter two compounds, implying a strongly sample-dependentH c2 as well. Intrinsic magnetic impurities arising from structural disorder and defects are possibly the origin of these anomalous superconducting state properties of Lu2Fe3Si5. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Low Temperature Physics Springer Journals

Specific heat and critical field for some iron-containing superconductors

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References (19)

Publisher
Springer Journals
Copyright
Copyright
Subject
Physics; Condensed Matter Physics; Characterization and Evaluation of Materials; Magnetism, Magnetic Materials
ISSN
0022-2291
eISSN
1573-7357
DOI
10.1007/BF00683777
Publisher site
See Article on Publisher Site

Abstract

Specific heat measurements on superconductingLu 2 Fe 3 Si 5 reveal a strong sample dependence of the residual specific heat contribution γ s , belowT c , effectively ruling out the possibility of a two-band model. Upper critical fieldH c2 results for Lu2Fe3Si5, Sc2Fe3Si5, and LaFe4P12 show a very largeH c2 with an unusual temperature dependence for Lu2Fe3Si5, in contrast to the latter two compounds, implying a strongly sample-dependentH c2 as well. Intrinsic magnetic impurities arising from structural disorder and defects are possibly the origin of these anomalous superconducting state properties of Lu2Fe3Si5.

Journal

Journal of Low Temperature PhysicsSpringer Journals

Published: Nov 6, 2004

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