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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 | Abstract: | We 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 | Services: | Forum | Review | PDF | Favorites |
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