Surface metal-insulator transition in the Hubbard model

M. Potthoff; W. Nolting

doi:10.1103/physrevb.59.2549

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arXiv · cond-mat/9811135

Surface metal-insulator transition in the Hubbard model

M. Potthoff·W. Nolting

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Abstract

The correlation-driven metal-insulator (Mott) transition at a solid surface is studied within the Hubbard model for a semi-infinite lattice by means of the dynamical mean-field theory. The transition takes place at a unique critical strength of the interaction. Depending on the surface geometry, the interaction strength and the wave vector, we find one-electron excitations in the coherent part of the surface-projected metallic spectrum which are confined to two dimensions.

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M. Potthoff, W. Nolting. 1998-11-10. Surface metal-insulator transition in the Hubbard model. https://doi.org/10.1103/physrevb.59.2549

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