Quantum critical end point for the Kondo volume collapse model.
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.
Dzero
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Department of Physics and Astronomy, Iowa State University and Ames Laboratory, Ames, Iowa 50011, USA.
Norman
M R
MR
Paul
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Pépin
C
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Schmalian
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J