| Autor: |
O, Trovarelli, C, Geibel, S, Mederle, C, Langhammer, F M, Grosche, P, Gegenwart, M, Lang, G, Sparn, F, Steglich |
| Rok vydání: |
1999 |
| Zdroj: |
Physical review letters. 85(3) |
| ISSN: |
0031-9007 |
| Popis: |
We report the first observation of non-Fermi-liquid (NFL) effects in a clean Yb compound at ambient pressure and zero magnetic field. The electrical resistivity and the specific-heat coefficient of high-quality single crystals of YbRh(2)Si(2) present a linear and a logarithmic temperature dependence, respectively, in more than a decade in temperature. We ascribe this NFL behavior to the presence of (presumably) quasi-2D antiferromagnetic spin fluctuations related to a very weak magnetic phase transition at T(N) approximately 65 mK. Application of hydrostatic pressure induces anomalies in the electrical resistivity, indicating the stabilization of magnetic order. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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