Actions for Phase transitions in highly-correlated f-electron systems with fluctuating valence [electronic resource].

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Phase transitions in highly-correlated f-electron systems with fluctuating valence [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1979.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 11 : digital, PDF file
Additional Creators
Argonne National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
A formalism is presented for treating electrons in highly- correlated spin-orbit coupled multiplet levels in f-shells, which are also hybridized with valence or conduction states. This is achieved by introducing operators which cause transitions between the configurations, but project out all other configurations. The Zwanzig-Mori projection operator technique is exploited to derive results for the electron Green's functions, which are then solved self-consistently. The lowest order self-consistent solutions bear a certain resemblance to unrestricted Hartree-Fock theory. Higher order terms exhibit Kondo-like singularities under certain conditions. It is shown that several phases, both configurational and magnetic, are possible depending on the relative values of the conduction electron bandwidth, the hybridization energy and the values of the Coulomb and exchange integrals.
Report Numbers
E 1.99:conf-790895--1
conf-790895--1
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Note
Published through SciTech Connect.
01/01/1979.
"conf-790895--1"
3. international conference on electronic properties of actinide materials, Grenoble, France, 30 Aug 1979.
Fedro, A. J.; Sinha, S. K.
Funding Information
W-31-109-ENG-38
View MARC record | catkey: 14065402