Phys. Rev. B 59, 2549–2555 (1999)Surface metal-insulator transition in the Hubbard modelReceived 8 July 1998; revised 9 September 1998; published in the issue dated 15 January 1999 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. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.59.2549
DOI:
10.1103/PhysRevB.59.2549
PACS:
71.10.Fd, 71.27.+a, 71.30.+h, 73.20.-r
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