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

Oron Zachar
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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 $2k_{F}$ CDW and $k=0$ 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.

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Oron Zachar. 2000-11-18. Staggered liquid phases of the 1D Kondo-Heisenberg lattice model. https://doi.org/10.1103/physrevb.63.205104

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