Low temperature thermal and electrical transport properties of ZrZn2 in high magnetic field

The low temperature electrical and thermal transport properties of the itinerant ferromagnet ZrZn 2 were investigated in order to explore the nature of the Fermi-liquid breakdown in this material. We have implemented electrical and thermal conductivity measurements down to temperatures of 100 mK and...

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Hauptverfasser: Zou, Yang (VerfasserIn) , Rothfuß, Daniel Simon (VerfasserIn) , Fleischmann, Andreas (VerfasserIn) , Enss, Christian (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2012
In: Journal of physics. Conference Series
Year: 2012, Jahrgang: 391, Heft: 1
ISSN:1742-6596
DOI:10.1088/1742-6596/391/1/012116
Online-Zugang:Verlag, Volltext: http://dx.doi.org/10.1088/1742-6596/391/1/012116
Verlag, Volltext: http://stacks.iop.org/1742-6596/391/i=1/a=012116
Volltext
Verfasserangaben:Y. Zou, M. Sutherland, S. Friedemann, S.M. Hayden, D. Rothfuss, A. Fleischmann, C. Enss, F.M. Grosche

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520 |a The low temperature electrical and thermal transport properties of the itinerant ferromagnet ZrZn 2 were investigated in order to explore the nature of the Fermi-liquid breakdown in this material. We have implemented electrical and thermal conductivity measurements down to temperatures of 100 mK and in high magnetic field. In zero field and above 2 K the electrical and effective thermal resistivities take a T 5/3 and T -linear form, respectively. These are the signatures of the marginal Fermi-liquid, predicted to occur close to a ferromagnetic quantum critical point by spin fluctuation theory. In contrast, we find that below 2 K and in external magnetic field the electrical resistivity assumes a quadratic temperature dependence, consistent with a return to conventional Fermi-liquid behaviour. 
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