Metal-Insulator Transition Tuned by External Gates in Hall Systems with Constrictions
arXiv:cond-mat/0512589 · doi:10.1103/PhysRevLett.97.046801
Abstract
The nature of a metal-insulator transition tuned by external gates in quantum Hall (QH) systems with point constrictions, as reported in recent experiments of Roddaro et al [1], is examined. We attribute this phenomenon to a splitting of the integer edge into conducting and insulating stripes, the latter wide enough to allow for the stability of the edge structure. Inter-channel impurity scattering and inter-channel Coulomb interactions do not destabilize this picture.
arXiv comment4 pages, 6 figures
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Cited by in corpus (4)
- Transport through constricted quantum Hall edge systems: beyond the quantum point contact
- Transport of fractional Hall quasiparticles through an antidot
- Electrostatics of Edge States of Quantum Hall Systems with Constrictions: Metal--Insulator Transition Tuned by External Gates
- On transport in quantum Hall systems with constrictions