δ-Function Peak in the Specific Heat of High- Tc Superconductors: Monte Carlo Simulation

Xiao Hu, Seiji Miyashita, and Masashi Tachiki
Phys. Rev. Lett. 79, 3498 – Published 3 November 1997
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Abstract

A δ-function peak in the specific heat is observed at the melting point Tm of the flux lattice in high- Tc superconductors. It is 18.5kB and 17.5kB in the liquid and the solid phases per flux per layer, respectively, and increases to 23kB in ΔT=0.009Tm around Tm. At Tm the system changes from the triangular flux lattice to a decoupled 2D liquid of vortices. The latent heat is 0.07kBTm per flux per layer.

  • Received 24 March 1997

DOI:https://doi.org/10.1103/PhysRevLett.79.3498

©1997 American Physical Society

Authors & Affiliations

Xiao Hu1, Seiji Miyashita2, and Masashi Tachiki1

  • 1National Research Institute for Metals, Tsukuba 305, Japan
  • 2Graduate School of Science, Osaka University, Osaka 560, Japan

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Vol. 79, Iss. 18 — 3 November 1997

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