Article ID Journal Published Year Pages File Type
8165365 Physica C: Superconductivity and its Applications 2012 6 Pages PDF
Abstract
► Self-trapping (ST) transition is studied in a 2D Holstein-Hubbard (HH) model. ► Series of canonical transformations are performed to eliminate the phonons. ► Resultant effective Hubbard model is solved by a mean-field method. ► ST transition turns out to be continuous in the anti-adiabatic regime. ► In the adiabatic case, ST transition is found to be discontinuous.
Keywords
Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
Preview
Localization-delocalization transition in a two-dimensional Holstein-Hubbard model
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