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

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

2004-12-03

arxiv.org/abs/cond-mat/0412075v1

Phys. Rev. Lett., 95, 046402 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

Sent to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.95.046402

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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