Evidence for a New Magnetic Field Scale in CeCoIn5

I. Sheikin, H. Jin, R. Bel, K. Behnia, C. Proust, J. Flouquet, Y. Matsuda, D. Aoki, and Y. Ōnuki
Phys. Rev. Lett. 96, 077207 – Published 24 February 2006

Abstract

The Nernst coefficient of CeCoIn5 displays two distinct anomalies in magnetic field. The feature detected at HK23T is similar to what is observed in CeRu2Si2 at Hm=7.8T where a metamagnetic transition occurs. In CeCoIn5, new frequencies are observed in de Haas–van Alphen oscillations when the field exceeds 23 T where the Dingle temperature decreases by about 30%. Based on the Nernst coefficient anomalies, the magnetic phase diagram of CeCoIn5 is revised.

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  • Received 26 May 2005

DOI:https://doi.org/10.1103/PhysRevLett.96.077207

©2006 American Physical Society

Authors & Affiliations

I. Sheikin1, H. Jin2, R. Bel2, K. Behnia2, C. Proust3, J. Flouquet4, Y. Matsuda5, D. Aoki4, and Y. Ōnuki6

  • 1Grenoble High Magnetic Field Laboratory (CNRS), BP 166, 38042 Grenoble, France
  • 2Laboratoire de Physique Quantique (CNRS), ESPCI, 10 Rue de Vauquelin, 75231 Paris, France
  • 3Laboratoire National des Champs Magnétiques Pulsés (CNRS), BP 4245, 31432 Toulouse, France
  • 4DRFMC/SPSMS, Commissariat à l’Energie Atomique, F-38042 Grenoble, France
  • 5Department of Physics, University of Kyoto, Kyoto 608-8502, Japan
  • 6Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan

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Issue

Vol. 96, Iss. 7 — 24 February 2006

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