Fractionally Charged Polarons and Phase Separation in an Extended Falicov-Kimball Model

Details Fractionally Charged Polarons and Phase Separation in an Extended Falicov-Kimball Model Fractionally Charged Polarons and Phase Separation in an Extended Falicov-Kimball Model

2005-09-29

arxiv.org/abs/cond-mat/0509764v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures, RevTex

Scientific paper

We present the first numerical study of the Falicov-Kimball model extended by an on-site hybridization away from the particle-hole symmetry point. Stable polaronic distortions of the charge-density wave (CDW) phase are observed when doping with a single hole. For moderate hole-doping, we find phase separation between a hole-rich homogeneous state and the usual CDW state. Excitonic order is enhanced around the hole-rich region, locally manifesting the global competition between this and the CDW phase. Associated with the hole-doping is a fractionalization of the electron density between the itinerant and localized electrons. The calculated local density of states at the polaron centre reveals this fractionalization to be the result of charge fluctuations induced by the hybridization. We propose a scanning tunneling microscope experiment to test our results.

Affiliated with

Also associated with

No associations

Rating

Fractionally Charged Polarons and Phase Separation in an Extended Falicov-Kimball Model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Fractionally Charged Polarons and Phase Separation in an Extended Falicov-Kimball Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fractionally Charged Polarons and Phase Separation in an Extended Falicov-Kimball Model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-460667