Universal scaling and quantum critical behavior of CeRhSb(1-x)Sn(x)

(2)Marian Smoluchowski Institute of Physics; A. Slebarski (1); Jagiellonian University; J.Spalek (2) ((1) Institute of Physics; Katowice; Krakow; Poland; Poland); University of Silesia

arxiv: cond-mat/0412075 · v1 · submitted 2004-12-03 · ❄️ cond-mat.str-el

Universal scaling and quantum critical behavior of CeRhSb(1-x)Sn(x)

A. Slebarski (1) , J.Spalek (2) ((1) Institute of Physics , University of Silesia , Katowice , Poland , (2)Marian Smoluchowski Institute of Physics , Jagiellonian University , Krakow

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classification ❄️ cond-mat.str-el

keywords behaviorcerhsbcriticalkondoliquidquantumresistivityscaling

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We propose a universal scaling rho*chi=const of the electrical resistivity rho with the inverse magnetic susceptibility chi^(-1) below the temperature of the quantum-coherence onset for the Ce 4f states in CeRhSb(1-x)Sn(x). In the regime, where the Kondo gap disappears (x~0.12), the system forms a non-Fermi liquid (NFL), which transforms into a Fermi liquid at higher temperature. The NFL behavior is attributed to the presence of a novel quantum critical point (QCP) at the Kondo insulator - correlated metal boundary. The divergent behavior of the resistivity, the susceptibility, and the specific heat has been determined when approaching QCP from the metallic side.

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Universal scaling and quantum critical behavior of CeRhSb(1-x)Sn(x)

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