Pre-formed superconducting and quadrupolar fluctuations and heavy electron mass in an exactly solvable model

A. Zvyagin ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2003, vol. 34, issue 3, 275-280

Abstract: We present the Bethe ansatz solution for the two-channel non-magnetic hybridization impurity model of electrons with spin and orbital degrees of freedom. It is shown that a small concentration of such impurities enhances the effective mass of electrons. A large concentration of impurities results in a pre-formation of superconducting and quadrupolar-order fluctuations and in the co-existence of them for some range of parameters. Copyright Springer-Verlag Berlin/Heidelberg 2003

Date: 2003
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DOI: 10.1140/epjb/e2003-00222-4

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