Aharonov Bohm effect in 2D topological insulator
arXiv:1501.03652 · doi:10.1016/j.ssc.2014.12.017
Abstract
We present magnetotransport measurements in HgTe quantum well with inverted band structure, which expected to be a two-dimensional topological insulator having the bulk gap with helical gapless states at the edge. The negative magnetoresistance is observed in the local and nonlocal resistance configuration followed by the periodic oscillations damping with magnetic field. We attribute such behaviour to Aharonov-Bohm effect due to magnetic flux through the charge carrier puddles coupled to the helical edge states. The characteristic size of these puddles is about 100 nm.
arXiv comment6 pages, 6 figures
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Cited by in corpus (8)
- Interplay of chiral and helical states in a Quantum Spin Hall Insulator lateral junction
- Magnetotransport in disordered two-dimensional topological insulators: signatures of charge puddles
- Topological insulator ring with magnetic impurities
- Spin and charge transport through helical Aharonov-Bohm interferometer with strong magnetic impurity
- Tunneling Aharonov-Bohm interferometer on helical edge states
- Tunable helical crystals
- How to Measure Magnetic Flux with a Single Position Measurement?
- Effective Hamiltonian of topologically protected qubit in a helical crystal