Evolution of critical scaling behavior near a ferromagnetic quantum phase transition

M. Brian Maple; Nicholas P. Butch

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Evolution of critical scaling behavior near a ferromagnetic quantum phase transition

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arxiv 0908.1809 v1 pith:UKVZ7H67 submitted 2009-08-12 cond-mat.str-el cond-mat.stat-mech

Evolution of critical scaling behavior near a ferromagnetic quantum phase transition

Nicholas P. Butch , M. Brian Maple This is my paper

classification cond-mat.str-el cond-mat.stat-mech

keywords criticalferromagneticquantumphasescalingtemperaturetransitionuru2-xrexsi2

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Magnetic critical scaling in URu2-xRexSi2 single crystals continuously evolves as the ferromagnetic critical temperature is tuned towards zero via chemical substitution. As the quantum phase transition is approached, the critical exponents gamma and (delta-1) decrease to zero in tandem with the critical temperature and ordered moment, while the exponent beta remains constant. This novel trend distinguishes URu2-xRexSi2 from stoichiometric quantum critical ferromagnets and appears to reflect an underlying competition between Kondo and ferromagnetic interactions.

Evolution of critical scaling behavior near a ferromagnetic quantum phase transition

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