期刊
PHYSICAL REVIEW B
卷 84, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.201103
关键词
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资金
- ARO [W911NF-09-1-0527]
- NSF [DMR-0955778]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [955778] Funding Source: National Science Foundation
Topological band insulators which are dynamically generated by electron-electron interactions have been theoretically proposed in two-and three-dimensional lattice models. We present evidence that the two-dimensional version can be stabilized in digital (111) heterostructures of transition-metal oxides as a result of purely local interactions. The topological phases are accompanied by spontaneous ordering of complex orbitals and we discuss their stability with respect to the Hund's rule coupling, Jahn-Teller interaction, and inversion-symmetry breaking terms. As main competitors we identify spin-nematic and magnetic phases.
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