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28 March 2024
 
  » arxiv » cond-mat/0409491

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A strange metal with a small Fermi surface and strong collective excitations
F. H. L. Essler ; A. M. Tsvelik ;
Date 20 Sep 2004
Journal Phys. Rev. B71, 195116 (2005).
Subject Superconductivity | cond-mat.supr-con
AbstractWe develop a theory of a hybrid state, where quasi-particles coexist with strong collective modes, taking as a starting point a model of infinitely many 1D Mott insulators coupled by a weak interchain tunneling. This state exists at an intermediate temperature range and undergoes an antiferromagnetic phase transition at temperatures much smaller than the Mott-Hubbard gap. The most peculiar feature of the hybrid state is that the volume of the Fermi surface is unrelated to the electron density. We present a self-consistent derivation of the low energy effective action for our model.
Source arXiv, cond-mat/0409491
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