From the magnetic-field-driven transitions to the zero-field transition in two-dimensions

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dc.creatorHanein, Y.
dc.creatorShahar, D.
dc.creatorShtrikman, Hadas
dc.creatorYoon, J.
dc.creatorLi, C. C.
dc.creatorTsui, D. C.
dc.date1999-01-19
dc.date.accessioned2026-07-07T03:12:39Z
dc.date.available2026-07-07T03:12:39Z
dc.descriptionFor more than a decade it was widely accepted that two-dimensional electrons are insulating at zero temperature and at zero magnetic-field. Experimentally it was demonstrated that, when placed in a strong perpendicular magnetic field, the insulating phase turns into a quantum-Hall state. While this transition was in accordance with existing theoretical models (KLZ), the density driven metal-insulator transition at zero magnetic-field, recently observed in high-quality two-dimensional systems, was unforeseen and, despite considerable amount of effort, its origins are still unknown. In order to improve our understanding of the zero magnetic-field transition, we conducted a study of the insulator to quantum-Hall transition in low-density, two-dimensional, hole system in GaAs that exhibits the zero magnetic-field metal-insulator transition. We found that, in the low field insulating phase, upon increasing the carrier density towards the metal-insulator transition, the critical magnetic-field of the insulator to quantum-Hall transition decreases and converges to the zero magnetic-field metal-insulator transition. This implies a common origin for both the finite magnetic-field and the zero magnetic-field transitions.
dc.description4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/9901186
dc.identifierhttp://arxiv.org/abs/cond-mat/9901186
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/28989
dc.subjectCondensed Matter
dc.titleFrom the magnetic-field-driven transitions to the zero-field transition in two-dimensions
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