Field and pressure response of Yb compounds close to a quantum critical point |
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Authors: | C Seuring EW Scheidt E Bauer |
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Affiliation: | 1. Lehrstuhl für Experimentalphysik III, Universit?t Augsburg, D-86159, Augsburg, Germany 2. Institut für Experimentalphysik, TU Wien, A-1040, Wien, Austria
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Abstract: | YbCu5−x Al x provides the possibility to tune ground state properties by a change of the valence due to the Cu/Al substitution, by pressure as well as by the application of a magnetic field. Near to the critical concentration x cr≈1.5 non-Fermi-liquid properties (NFL) are obvious, obeying hyperscaling. If magnetic order sets in for x>1.5, the application of moderate magnetic fields quenches order and again NFL features become evident. Hyperscaling in this case indicates strongly interacting spin fluctuations. |
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Keywords: | YbCu5− x Al x non-Fermi-liquid scaling analysis |
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