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arXiv · 0709.4228

Spectral properties in the charge density wave phase of the half-filled Falicov-Kimball Model

S. R. Hassan·H. R. Krishnamurthy
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Abstract

We study the spectral properties of charge density wave (CDW) phase of the half-filled spinless Falicov-Kimball model within the framework of the Dynamical Mean Field Theory. We present detailed results for the spectral function in the CDW phase as function of temperature and $U$. We show how the proximity of the non-fermi liquid phase affects the CDW phase, and show that there is a region in the phase diagram where we get a CDW phase without a gap in the spectral function. This is a radical deviation from the mean-field prediction where the gap is proportional to the order parameter.

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S. R. Hassan, H. R. Krishnamurthy. 2007-09-26. Spectral properties in the charge density wave phase of the half-filled Falicov-Kimball Model. https://doi.org/10.1103/physrevb.76.205109

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