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Quantum critical end point of the Kondo volume collapse

M. Dzero·M. R. Norman·I. Paul·C. Pepin·J. Schmalian
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Abstract

The Kondo volume collapse describes valence transitions in f-electron metals, and is characterized by a line of first order transitions in the pressure-temperature phase plane terminated at critical end points. We analyze the quantum critical end point, when the lower end point is tuned to T=0, and determine the specific heat, thermal expansion, and compressibility. We find that the inclusion of quantum critical fluctuations leads to a novel bifurcation of the first order phase line. Finally, we show that critical strain fluctuations can cause both, superconductivity and non-Fermi liquid behavior near the critical point.

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M. Dzero, M. R. Norman, I. Paul, C. Pepin, J. Schmalian. 2006-08-17. Quantum critical end point of the Kondo volume collapse. https://doi.org/10.1103/physrevlett.97.185701

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