First-principles-based s±-wave modeling for iron-based superconductors: Specific heat and nuclear magnetic relaxation rate

N. Nakai, H. Nakamura, Y. Ota, Y. Nagai, N. Hayashi, and M. Machida
Phys. Rev. B 82, 094501 – Published 2 September 2010

Abstract

In order to consistently explain controversial experimental results on superconducting states observed by different probes in typical iron-based superconductors, we construct a realistic multiband s±-wave pairing model by combining the quasiclassical formalism with the first-principles calculation. The model successfully resolves the controversies in contrast to the fact that simplified models such as two-band s±-wave one fail to do. A key in the model is the existence of relatively small gaps which leads to material-dependent peculiarities.

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  • Received 28 July 2010

DOI:https://doi.org/10.1103/PhysRevB.82.094501

©2010 American Physical Society

Authors & Affiliations

N. Nakai1,2,*, H. Nakamura1,2,3, Y. Ota1,2, Y. Nagai1,2,3, N. Hayashi2,4, and M. Machida1,2,3

  • 1CCSE, Japan Atomic Energy Agency, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015, Japan
  • 2CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
  • 3TRIP, JST, 5 Sanban-cho, Chiyoda-ku, Tokyo 110-0075, Japan
  • 4N2RC, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai 599-8570, Japan

  • *nakai.noriyuki@jaea.go.jp

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Vol. 82, Iss. 9 — 1 September 2010

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