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Title: Orbital Analogue of the Quantum Anomalous Hall Effect in p-Band Systems

Abstract

We investigate the topological insulating states of the p-band systems in optical lattices induced by the on site orbital angular momentum polarization, which exhibit gapless edge modes in the absence of Landau levels. This effect arises from the energy-level splitting between the on site p{sub x}+ip{sub y} and p{sub x}-ip{sub y} orbitals by rotating each optical lattice site around its own center. At large rotation angular velocities, this model naturally reduces to two copies of Haldane's quantum Hall model. The distribution of the Berry curvature in momentum space and the quantized Chern numbers are calculated. The experimental realization of this state is feasible.

Authors:
 [1]
  1. Department of Physics, University of California, San Diego, California 92093 (United States)
Publication Date:
OSTI Identifier:
21179873
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 101; Journal Issue: 18; Other Information: DOI: 10.1103/PhysRevLett.101.186807; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANGULAR VELOCITY; ENERGY LEVELS; HALL EFFECT; ORBITAL ANGULAR MOMENTUM; POLARIZATION; QUANTUM MECHANICS; ROTATION; TOPOLOGY

Citation Formats

Congjun, Wu. Orbital Analogue of the Quantum Anomalous Hall Effect in p-Band Systems. United States: N. p., 2008. Web. doi:10.1103/PHYSREVLETT.101.186807.
Congjun, Wu. Orbital Analogue of the Quantum Anomalous Hall Effect in p-Band Systems. United States. doi:10.1103/PHYSREVLETT.101.186807.
Congjun, Wu. Fri . "Orbital Analogue of the Quantum Anomalous Hall Effect in p-Band Systems". United States. doi:10.1103/PHYSREVLETT.101.186807.
@article{osti_21179873,
title = {Orbital Analogue of the Quantum Anomalous Hall Effect in p-Band Systems},
author = {Congjun, Wu},
abstractNote = {We investigate the topological insulating states of the p-band systems in optical lattices induced by the on site orbital angular momentum polarization, which exhibit gapless edge modes in the absence of Landau levels. This effect arises from the energy-level splitting between the on site p{sub x}+ip{sub y} and p{sub x}-ip{sub y} orbitals by rotating each optical lattice site around its own center. At large rotation angular velocities, this model naturally reduces to two copies of Haldane's quantum Hall model. The distribution of the Berry curvature in momentum space and the quantized Chern numbers are calculated. The experimental realization of this state is feasible.},
doi = {10.1103/PHYSREVLETT.101.186807},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 18,
volume = 101,
place = {United States},
year = {2008},
month = {10}
}