| Autor: |
S. Drobnik, Hilbert von Löhneysen, Th. Wolf, Peter Adelmann, Kai Grube, Christoph Meingast, W. Knafo |
| Rok vydání: |
2007 |
| Předmět: |
|
| Zdroj: |
Journal of Magnetism and Magnetic Materials. 310:354-356 |
| ISSN: |
0304-8853 |
| DOI: |
10.1016/j.jmmm.2006.10.068 |
| Popis: |
The heavy-fermion compound YbNiSi 3 orders antiferromagnetically below the Neel temperature T N = 5.1 K . The magnetic order can be suppressed either by applying a magnetic field of B c = 8.3 T (for B ∥ b ) or by replacing Si with Ge. The latter is equivalent to a negative lattice pressure. In search of a field-induced quantum phase transition, we studied the disappearance of magnetic order in YbNiSi 3 at B c , using specific-heat and resistivity measurements. Apart from a slightly enhanced specific heat and resistivity at B c , no signs for quantum criticality could be identified down to 0.35 K. Our data indicate that YbNiSi 3 belongs to the heavy-fermion compounds in which the magnetic field gradually reduces the amount of antiferromagnetic order until the magnetic entropy vanishes continuously at B c and the system changes smoothly to a field-polarized paramagnet. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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