Model Hamiltonian for topological insulators
Top Cited Papers
- 26 July 2010
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 82 (4), 045122
- https://doi.org/10.1103/physrevb.82.045122
Abstract
In this paper we give the full microscopic derivation of the model Hamiltonian for the three-dimensional topological insulators in the family of materials (, and ). We first give a physical picture to understand the electronic structure by analyzing atomic orbitals and applying symmetry principles. Subsequently, we give the full microscopic derivation of the model Hamiltonian introduced by Zhang et al. [ Nat. Phys. 5, 438 (2009)] based both on symmetry principles and the perturbation theory. Two different types of terms, which break the in-plane full rotation symmetry down to threefold rotation symmetry, are taken into account. An effective Hamiltonian is derived for the topological surface states. Both bulk and surface models are investigated in the presence of an external magnetic field, and the associated Landau level structure is presented. For a more quantitative fitting to the first principle calculations, we also present a model Hamiltonian including eight energy bands.
Keywords
This publication has 37 references indexed in Scilit:
- The birth of topological insulatorsNature, 2010
- The quantum spin Hall effect and topological insulatorsPhysics Today, 2010
- Nonlocal Transport in the Quantum Spin Hall StateScience, 2009
- Experimental Realization of a Three-Dimensional Topological Insulator, Bi 2 Te 3Science, 2009
- Observation of a large-gap topological-insulator class with a single Dirac cone on the surfaceNature Physics, 2009
- Topological insulators in Bi2Se3, Bi2Te3 and Sb2Te3 with a single Dirac cone on the surfaceNature Physics, 2009
- A topological Dirac insulator in a quantum spin Hall phaseNature, 2008
- Quantum Spin Hall Insulator State in HgTe Quantum WellsScience, 2007
- Topological insulators with inversion symmetryPhysical Review B, 2007
- Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum WellsScience, 2006