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27 April 2024 |
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On the low-field insulator-quantum Hall conductor transitions | | Tsai-Yu Huang
; J. R. Juang
; C. F. Huang
; Gil-Ho Kim
; Chao-Ping Huang
; C.-T. Liang
; Y. H. Chang
; Y. F. Chen
; Y. Lee
; D. A. Ritchie
; | | Date: |
12 Mar 2005 | | Journal: | Physica E 22, 240-243 (2004) | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Abstract: | We studied the insulator-quantum Hall conductor transition which separates the low-field insulator from the quantum Hall state of the filling factor $
u=4$ on a gated two-dimensional GaAs electron system containing self-assembled InAs quantum dots. To enter the $
u=4$ quantum Hall state directly from the low-field insulator, the two-dimensional system undergoes a crossover from the low-field localization to Landau quantization. The crossover, in fact, covers a wide range with respect to the magnetic field rather than only a small region near the critical point of the insulator-quantum Hall conductor transition. | | Source: | arXiv, cond-mat/0503306 | | Services: | Forum | Review | PDF | Favorites | |
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