Effect of Electron Correlation on the Bragg Reflection

Abstract

We study the effect of correlation on the Bragg reflection in the 3D electron gas, the 1D Luttinger liquid, and the 1D Hubbard model in an alternating periodic potential at half-filling. In the last system, we suggest a Luttinger-liquid-type quasi-metallic state in the crossover region from the band insulator to the Mott insulator. We explain the appearance of this state in terms of the incompatibility of the Bragg reflection with the concept of Luttinger liquids.

4 pages, 3 figures

References in corpus (2)

• From band insulator to Mott insulator in one dimension
• Electronic States in Half-Filled Correlated System with Alternating Potential

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