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Gamma5 quasiparticles and avoided quantum criticality in U(Ru,Rh)2Si2

N. Harrison·A. V. Silhanek·C. D. Batista·M. Jaime·A. Lacerda·H. Amitsuka·J. A. Mydosh
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Abstract

We discuss recent specific heat data in high magnetic fields on URu2Si2 and 4% Rh-doped URu2Si2 as well as previously published de Haas-van Alphen data at lower magnetic fields in pure URu2Si2; both of which are consistent with quasiparticle bands formed from a hybridization between 5f-electron Gamma5 doublets and regular conduction electrons. The system exhibits itinerant electron metamagnetism that gives rise to a putative quantum critical point at \~ 34 -37 T (depending on the % of Rh) that is subsequently unstable to field-induced phases

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N. Harrison, A. V. Silhanek, C. D. Batista, M. Jaime, A. Lacerda, H. Amitsuka, J. A. Mydosh. 2005-06-15. Gamma5 quasiparticles and avoided quantum criticality in U(Ru,Rh)2Si2. https://arxiv.org/abs/cond-mat/0506384

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