Huge Enhancement of Impurity Scattering due to Critical Valence Fluctuations in a Ce-Based Heavy Electron System

Abstract

On the basis of the Ward-Pitaevskii identity, the residual resistivity ${\rho }_0$ is shown to exhibit huge enhancement around the quantum critical point of valence transition in Ce-based heavy electron systems. This explains a sharp peak of ${\rho }_0$ observed in CeCu${}_2$Ge${}_2$ under the pressure at $P\sim$16GPa where the superconducting trasition temperature also exhibit the sharp peak.

5 pages, 1 figure

References in corpus (1)

• Enhanced Impurity Scattering due to Quantum Critical Fluctuations

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