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26 May 2019
 
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Superconductivity due to co-operative Kondo effect in Pu 115's
M. Dzero ; P. Coleman ;
Rating Members: 2.25/5 (2 readers)
Date 31 May 2007
Subject Strongly Correlated Electrons (cond-mat.str-el); Superconductivity (cond-mat.supr-con)
AbstractWe outline key elements of a theory that accounts for anomalous properties of the PuCoGa$_5$ and PuRhGa$_5$ compounds as a consequence of a two-body interference between two Kondo screening channels. Virtual valence fluctuations of the magnetic Pu configurations create two conduction channels of different symmetry. Using the symplectic large-N approach, we are able to demonstrate our pairing mechanism in an exactly solvable large-N limit. The critical temperature reaches its maximum when the energy levels of excited valence configurations are almost degenerate. The symmetry of the order parameter is determined by the product of the Wannier form factors in the interfering conduction channels.
Source arXiv, arxiv.0706.0016
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