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Confinement of Interchain Hopping by Umklapp Scattering in Two-Coupled Chains

Y. Suzumura·M. Tsuchiizu·G. Gruner
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Abstract

The effect of umklapp scattering on interchain hopping has been investigated for two-coupled chains of interacting electrons with half-filled band. By analyzing in terms of renormalization group method, we have found that interchain hopping is renormalized to zero and is confined when a gap induced by umklapp scattering becomes larger than a critical value. From a phase diagram calculated on a plane of the interchain hopping and the gap, we discuss a role of the correlation gap which has been studied in metallic state at temperatures above spin density wave state in organic conductors.

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Y. Suzumura, M. Tsuchiizu, G. Gruner. 1998-03-25. Confinement of Interchain Hopping by Umklapp Scattering in Two-Coupled Chains. https://doi.org/10.1103/physrevb.57.r15040

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