Spatial inhomogeneity and strong correlation physics: A dynamical mean-field study of a model Mott-insulator-band-insulator heterostructure

被引：108

作者：

Okamoto, S ^{[1
]}

Millis, AJ ^{[1
]}

机构：

[1] Columbia Univ, Dept Phys, New York, NY 10027 USA

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.70.241104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We use the dynamical mean-field method to investigate electronic properties of heterostructures in which a finite number of Mott-insulator layers are embedded in a spatially infinite band insulator. The evolution of the correlation effects with the number of Mott insulating layers and with position in the heterostructure is determined, and the optical conductivity is computed. It is shown that the heterostructures are generally metallic, with moderately renormalized bands of quasiparticles appearing at the interface between the correlated and uncorrelated regions.

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页码：1 / 4

页数：4

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