Spectral Functions of the Falicov-Kimball Model with Electronic Ferroelectricity

Authors

Wei-Guo Yin, University of Nebraska at OmahaFollow
Wai-Ning Mei, University of Nebraska at OmahaFollow
Chun-Gang Duan, University of Nebraska at Omaha
Hai-Qing Lin, The Chinese University of Hong Kong, People's Republic of China
John R. Hardy, University of Nebraska-Lincoln

Document Type

Article

Publication Date

2003

Publication Title

Physical Review B

Volume

68

Abstract

We calculate the angular resolved photoemission spectrum of the Falicov-Kimball model with electronic ferroelectricity where d- and f-electrons have different hoppings. In mix-valence regimes, the presence of strong scattering processes between d – f excitons and a hole, created by emission of an electron, leads to the formation of pseudospin polarons and novel electronic structures with bandwidth scaling with that of d – f excitons. Especially, in the two-dimensional case, we find that flat regions exist near the bottom of the quasiparticle band in a wide range of the d- and f-level energy difference.

Comments

Published in Phys. Rev. B 68, 075111 (2003). Copyright © 2003 The American Physical Society. Used by permission.

Recommended Citation

Yin, Wei-Guo; Mei, Wai-Ning; Duan, Chun-Gang; Lin, Hai-Qing; and Hardy, John R., "Spectral Functions of the Falicov-Kimball Model with Electronic Ferroelectricity" (2003). Physics Faculty Publications. 14.
https://digitalcommons.unomaha.edu/physicsfacpub/14