Spin, Orbital, and Charge Order at the Interface between Correlated Oxides

被引：30

作者：

Jackeli, G. ^{[1
,2
]}

Khaliullin, G. ^{[1
]}

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[2] E Andronikashvili Inst Phys, GE-0177 Tbilisi, Georgia

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.101.216804

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The collective behavior of correlated electrons in the VO2 interface layer of the LaVO3/SrTiO3 heterostructure is studied within a quarter-filled t(2g)-orbital Hubbard model on a square lattice. We argue that the ground state is ferromagnetic, driven by the double-exchange mechanism, and is orbitally and charge ordered due to a confined geometry and electron correlations. The orbital and charge density waves open gaps on the entire Fermi surfaces of all orbitals. The theory explains the observed insulating behavior of the p-type interface between LaVO3 and SrTiO3.

引用

页数：4

共 21 条

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