Spin-fluctuation-mediated even-parity pairing in heavy-fermion superconductors
نویسندگان
چکیده
منابع مشابه
Tandem pairing in heavy-fermion superconductors.
We consider the internal structure of a d-wave heavy-fermion superconducting condensate, showing that it necessarily contains two components condensed in tandem: pairs of quasiparticles on neighboring sites and composite pairs consisting of two electrons bound to a single local moment. These two components draw upon the antiferromagnetic and Kondo interactions to cooperatively enhance the super...
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Group theory arguments have demonstrated that a general odd parity order parameter cannot have line nodes in the presence of spin-orbit coupling. In this paper, it is shown that these arguments do not hold on the kz = π/c zone face of a hexagonal close packed lattice. In particular, three of the six odd parity representations vanish identically on this face. This has potential relevance to the ...
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A. T. Rømer,1 S. Graser,2 T. S. Nunner,3 P. J. Hirschfeld,4 and B. M. Andersen1 1Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark 2Theoretical Physics III, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, D-86135 Augsburg, Germany 3Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Fre...
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Manuscript is plain TeX with macros. Figures start at FIGURES BEGIN HERE, with instructions on what to do to get them. In this paper, a generalization of standard spin fluctuation theory is considered by replacing the simple Hubbard interaction by the screened Hartree-Fock interaction for f electrons. This model is then used in both an LS and a JJ coupling scheme to construct the particle-parti...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1986
ISSN: 0163-1829
DOI: 10.1103/physrevb.34.6554