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Type: Artigo de periódico
Title: Observation Of Field-induced Single Impurity Behavior In The Heavy Fermion Compound Ce3 Co4 Sn13
Author: Cornelius A.L.
Christianson A.D.
Lawrence J.L.
Fritsch V.
Bauer E.D.
Sarrao J.L.
Thompson J.D.
Pagliuso P.G.
Abstract: We have performed heat capacity measurements in magnetic fields to 90 kOe on single crystals of the cubic heavy fermion compound Ce3 Co4 Sn13. In zero field, there are no signs of long-range magnetic order down to 0.35 K. However, C / T increases rapidly below 2 K, reaching a very large maximum value of ∼ 4 J / mol Ce-K around 0.8 K in zero field, and the high-field magnetic entropy approaches R ln 2 at 20 K. Above 25 kOe, the data are consistent with a Kondo impurity with TK = 1.2 K. Short-range magnetic correlations are suppressed by magnetic fields giving way to single impurity behavior above 25 kOe. © 2006 Elsevier B.V. All rights reserved.
Rights: fechado
Identifier DOI: 10.1016/j.physb.2006.01.259
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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