Electronic Correlations Near a Peierls-CDW Transition
نویسنده
چکیده
Results of a phenomenological Monte Carlo calculation for a 2D electronphonon Holstein model near a Peierls-CDW transition are presented. Here the zero Matsubara frequency part of the phonon action is dominant and we approximated it by a phenomenological form that has an Ising-like PeierlsCDW transition. The resulting model is studied on a 32×32 lattice. The single particle spectral weight A(k, ω), the density of states N(ω), and the real part of the conductivity σ1(ω) all show evidence of a pseudogap which develops in the low-energy electronic degrees of freedom as the Peierls-CDW transition is approached. ∗[email protected] †[email protected] 1
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