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A direct connection between quantum Hall plateaus and exact pair states in a 2D electron gas
Authors:Wenhua Hai  Zejun Li  Kewen Xiao
Institution:1.Department of physics and Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education,Hunan Normal University,Changsha,China
Abstract:It is previously found that the two-dimensional (2D) electron-pair in a homogeneous magnetic field has a set of exact solutions for a denumerably infinite set of magnetic fields. Here we demonstrate that as a function of magnetic field a band-like structure of energy associated with the exact pair states exists. A direct and simple connection between the pair states and the quantum Hall effect is revealed by the band-like structure of the hydrogen “pseudo-atom”. From such a connection one can predict the sites and widths of the integral and fractional quantum Hall plateaus for an electron gas in a GaAs-Al x Ga1−x As heterojunction. The results are in good agreement with the existing experimental data.
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