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Magnetic field dependence of the electronic specific heat in YBa2Cu3O6.95 single crystals

✍ Scribed by Kathryn A. Moler; David J. Baar; Jeffrey S. Urbach; Ruixing Liang; Walter N. Hardy; Aharon Kapitulnik

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 154 KB
Volume: 235-240
Category: Article
ISSN: 0921-4534
DOI: 10.1016/0921-4534(94)92109-1

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✦ Synopsis

We have determmed the magnetic field dependence of the electron density of states at the Fermi level, NF(H), by specific heat measurements on single-crystal YBCO. The total specific heat includes contribunons from phonons and impurities, as well as the electronic specific heat. The electronic specific heat is best described by a model which includes two characteristics of d-wave superconductors: a T 2 term m zero field, and a linear term that corresponds to NF(H) o¢ (H/Hc2)I/2, as predicted by Volovik for superconductors with lines of nodes m the gap.

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