Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2001-05-22
Physics
Condensed Matter
Strongly Correlated Electrons
28 pages, 11 figs
Scientific paper
10.1103/PhysRevB.65.155103
We discuss possible patterns of electron fractionalization in strongly interacting electron systems. A popular possibility is one in which the charge of the electron has been liberated from its Fermi statistics. Such a fractionalized phase contains in it the seed of superconductivity. Another possibility occurs when the spin of the electron, rather than its charge, is liberated from its Fermi statistics. Such a phase contains in it the seed of magnetism, rather than superconductivity. We consider models in which both of these phases occur and study possible phase transitions between them. We describe other fractionalized phases, distinct from these, in which fractions of the electron themselves fractionalize, and discuss the topological characterization of such phases. These ideas are illustrated with specific models of p-wave superconductors, Kondo lattices, and coexistence between d-wave superconductivity and antiferromagnetism.
Demler Eugene
Kee Hae-Young
Kim Yong Baek
Nayak Chetan
Senthil T.
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