Hassan, SR and Krishnamurthy, HR (2007) Spectral properties in the charge-density-wave phase of the half-filled Falicov-Kimball model. In: Physical Review B, 76 (20). 205109-1-205109-11.
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We study the spectral properties of the 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 a 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.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to the American Physical Society.|
|Department/Centre:||Division of Physical & Mathematical Sciences > Physics|
|Date Deposited:||03 Jun 2008|
|Last Modified:||19 Sep 2010 04:45|
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