Electron quasiparticles are progressively weakened by correlations upon approaching a continuos Mott metal-insulator transition in a bulk solid. We show that corresponding to the bulk weakening, a dead layer forms below the surface of the solid, where quasiparticles are exponentially suppressed. The surface dead layer depth is a bulk property and diverges when the Mott transition is approached. We describe this phenomenon in a Hubbard model within a self-consistent Gutzwiller approximation. The photoemission data of Rodolakis et al. [Phys. Rev. Lett. 102, 066805 (2009)] in V(2)O(3) appear to be in accord with this physical picture.

Surface Dead Layer for Quasiparticles Near a Mott Transition / Borghi, G.; Fabrizio, M.; Tosatti, E.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 102:6(2009), pp. 1-4. [10.1103/PhysRevLett.102.066806]

Surface Dead Layer for Quasiparticles Near a Mott Transition

Fabrizio, M.;Tosatti, E.
2009-01-01

Abstract

Electron quasiparticles are progressively weakened by correlations upon approaching a continuos Mott metal-insulator transition in a bulk solid. We show that corresponding to the bulk weakening, a dead layer forms below the surface of the solid, where quasiparticles are exponentially suppressed. The surface dead layer depth is a bulk property and diverges when the Mott transition is approached. We describe this phenomenon in a Hubbard model within a self-consistent Gutzwiller approximation. The photoemission data of Rodolakis et al. [Phys. Rev. Lett. 102, 066805 (2009)] in V(2)O(3) appear to be in accord with this physical picture.
2009
102
6
1
4
066806
https://arxiv.org/abs/0901.2706
Borghi, G.; Fabrizio, M.; Tosatti, E.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/13510
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