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- W3105890492 abstract "An extended, spinless Falicov-Kimball model in the presence of perpendicular magnetic field is investigated employing Hartree-Fock self-consistent mean-field theory in two dimensions. In the presence of an orbital field the hybridization-dependence of the excitonic average ${ Delta =<{{d_i}^dagger} {f_i}>}$ is modified. The exciton responses in subtle different ways for different chosen values of the magnetic flux consistent with Hofstadter's well-known spectrum. The excitonic average is suppressed by the application of magnetic field. We further examine the effect of Coulomb interaction and $f$-electron hopping on the condensation of exciton for some rational values of the applied magnetic field. The interband Coulomb interaction enhances the $Delta$ exponentially, while a non-zero $f$-electron hopping reduces it. A strong commensurability effect of the magnetic flux on the behaviour of the excitons is observed." @default.
- W3105890492 created "2020-11-23" @default.
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- W3105890492 date "2016-12-01" @default.
- W3105890492 modified "2023-10-18" @default.
- W3105890492 title "Exciton condensation in an extended Falicov-Kimball model in the presence of orbital magnetic fields" @default.
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- W3105890492 doi "https://doi.org/10.1209/0295-5075/116/57001" @default.
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