Electron structure of the Falicov-Kimball model with a magnetic field - Condensed Matter > Strongly Correlated ElectronsReport as inadecuate




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Abstract: The two-dimensional Falicov-Kimball model in the presence of a perpendicularmagnetic field is investigated by the dynamical mean-field theory. Within themodel the interplay between electron correlations and the fine electronstructure due to the magnetic field is essentially emerged. Without electroncorrelations the magnetic field induces the electron structure to the so-calledHofstadter butterfly. It is found that when electron correlations drives themetal-insulator transition, they simultaneously smear out the fine structure ofthe Hofstadter butterfly. In a long-range ordered phase, the electroncorrelation induced gap preserves the fine structure, but it separates theHofstadter butterfly into two wings.



Author: Minh-Tien Tran

Source: https://arxiv.org/







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