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arXiv · 1407.5360

Inclusion of intersite spatial correlations in the alloy analogy approach to the half-filled ionic Hubbard model

D. A. Rowlands·Yu-Zhong Zhang
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Abstract

Using the nonlocal coherent-potential approximation we study the effect of intersite spatial correlations on the transition from band insulator to metal as well as from metal to Mott insulator in the "alloy analogy" approach to the paramagnetic solution of the half-filled ionic Hubbard model. We find that intersite spatial correlations enhance the metallic phase.

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D. A. Rowlands, Yu-Zhong Zhang. 2014-07-21. Inclusion of intersite spatial correlations in the alloy analogy approach to the half-filled ionic Hubbard model. https://doi.org/10.1088/0953-8984%2F26%2F27%2F274201

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