paper

Staggered liquid phases of the 1D Kondo-Heisenberg lattice model

arXiv:cond-mat/0011312 · doi:10.1103/PhysRevB.63.205104

Abstract

We introduce a new family of one dimensional liquids, which we label as ''Staggered-Liquids'', in the phase diagram of the 1D Kondo-Heisenberg model. It encompasses three distinct spin gapped liquids and a new Luttinger liquid phase. A Staggered Liquid is characterized by gapless modes with ''large fermi-sea'' signature in the charge density wave (CDW) mode, and in that the superconducting order involves the near condensation of charge-2e Cooper pairs with finite center of mass momentum. In particular, the conventional gapless CDW and pairing modes are absent. In the process, we analytically derive the phase transition from an intermediate coupling spin gap phase to the strong coupling gapless LL phase of the Kondo-Heisenberg lattice model.

11 pages, 1 figure

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