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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·Y. Onuki
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Abstract

The Nernst coefficient of CeCoIn5 displays a distinct anomaly at H_K ~ 23 T. This feature is reminiscent of what is observed at 7.8 T in CeRu2Si2, a well-established case of metamagnetic transition. New frequencies are observed in de Haas-van Alphen oscillations when the field exceeds 23 T, which may indicate a modification of the Fermi surface at this field.

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I. Sheikin, H. Jin, R. Bel, K. Behnia, C. Proust, J. Flouquet, Y. Matsuda, D. Aoki, Y. Onuki. 2005-05-31. Evidence for a new magnetic field scale in CeCoIn5. https://doi.org/10.1103/physrevlett.96.077207

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