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

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arxiv cond-mat/0506384 v1 pith:CTA5RRUQ submitted 2005-06-15 cond-mat.str-el cond-mat.mtrl-sci

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 This is my paper
classification cond-mat.str-el cond-mat.mtrl-sci
keywords uru2si2datafieldsgamma5magneticquantumalphenavoided
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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