Vishwanath A, Carpentier D. Two-dimensional anisotropic non-Fermi-liquid phase of coupled Luttinger liquids.
PHYSICAL REVIEW LETTERS 2001;
86:676-679. [PMID:
11177910 DOI:
10.1103/physrevlett.86.676]
[Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2000] [Indexed: 05/23/2023]
Abstract
Using bosonization techniques, we show that strong forward scattering interactions between one-dimensional spinless Luttinger liquids (LL) can stabilize a phase where charge-density wave, superconducting, and transverse single particle hopping perturbations are irrelevant. This new phase retains its LL-like properties in the directions of the chains, but with relations between exponents modified by the transverse interactions, whereas it is a perfect insulator in the transverse direction. The mechanism that stabilizes this phase is strong transverse charge-density wave fluctuations at incommensurate wave vector, which frustrates crystal formation by preventing lock-in of the in-chain density waves.
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