| Автор | Josef Oswald |
| Автор | Christoph Uiberacker |
| Дата выпуска | 2010-01-01 |
| dc.description | The plateau transitions of the integer quantum Hall effect (QHE) are accompanied by dissipative bulk current flow, which causes the corresponding peaks in the longitudinal magneto-resistance R<sub>xx</sub>. On the basis of a non-equilibrium network model for magneto-transport, we propose an experimental setup for suppressing the dissipation in the plateau transition regime. This is achieved by an appropriate biasing of a narrow stripe shaped gate electrode, which is aligned to the longitudinal direction of the sample and needs to cover only a vanishing small part (few percent) of the bulk region. Our calculations demonstrate, that the reduction of the dissipation is accompanied by a drastic narrowing of the plateau transitions. Besides the practical aspect in context with metrology, such an investigation provides additional insight into the role of quantum phase transitions and phase coherence for the appearance of the QHE. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | © 2010 IOP Publishing Ltd |
| Название | Gate controlled narrowing of the quantum Hall effect plateau transitions |
| Тип | paper |
| DOI | 10.1088/1742-6596/200/1/012153 |
| Electronic ISSN | 1742-6596 |
| Print ISSN | 1742-6588 |
| Журнал | Journal of Physics: Conference Series |
| Том | 200 |
| Первая страница | 12153 |
| Последняя страница | 12156 |
| Аффилиация | Josef Oswald; Institute for Physics, University of Leoben, Franz Josef Str. 18, A-8700 Leoben, Austria |
| Аффилиация | Christoph Uiberacker; Institute for Physics, University of Leoben, Franz Josef Str. 18, A-8700 Leoben, Austria |
| Выпуск | 1 |
