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D-wave specific heat in Y-123 and Bi-2212 single crystals: new data, alternative explanation

  • HITC—Transport, Thermodynamic Properties, Electron-Phonon Coupling
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Czechoslovak Journal of Physics Aims and scope

Abstract

The low temperature specific heat of Bi-2212 and Y-123 is measured for 1.2≤T≤7K and 0≤B≤14 T. We find that the field-induced “linear” term λ*(B)∔λ*(0) near 1–3K saturates for B≥8 T, decreases as a function of temeprature, and has nearly the same amplitude for both compounds. This is not easily reconciled with the predicted d-wave contribution C∝γT(B/Bc2)1/2. Oscillations of 2D vortices offer an alternative explanation.

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Authors and Affiliations

  1. Département de physique de la matière condensée, Université de Genève, 24 quai E.-Ansermet, CH-1211, Genève 4, Switzerland

    B. Revaz, A. Junod, A. Erb, J. -Y. Genoud & G. Triscone

  2. Institute for Metal Physics, S. Kovalevskaya 18, 620-219, Ekaterinburg, Russia

    A. Mirmelstein

Authors
  1. B. Revaz
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  2. A. Junod
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  3. A. Mirmelstein
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  4. A. Erb
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  5. J. -Y. Genoud
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  6. G. Triscone
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Revaz, B., Junod, A., Mirmelstein, A. et al. D-wave specific heat in Y-123 and Bi-2212 single crystals: new data, alternative explanation. Czech J Phys 46 (Suppl 3), 1205–1206 (1996). https://doi.org/10.1007/BF02562717

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  • DOI: https://doi.org/10.1007/BF02562717

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