Kukushkin, I V and Falko, V I and Haug, R J and vonKlitzing, K and Eberl, K (1996) Magneto-optical evidence of the percolation nature of the metal-insulator transition in the two-dimensional electron system. Physical Review B, 53 (20). pp. 13260-13263. ISSN 0163-1829
Full text not available from this repository.Abstract
We compare the results of the transport and time-resolved magnetoluminescence measurements in disordered two-dimensional (2D) electron systems in GaAs-AlxGa1-xAs heterostructures in the extreme quantum limit, particularly in the vicinity of the metal-insulator transition (MIT). At filling factors nu<1, the optical signal has two components: the single-rate exponentially decaying part attributed to a uniform liquid and a power-law long-living tail specific to a microscopically inhomogeneous state of electrons. We interpret this result as a separation of the 2D electron system into liquid and localized phases, especially because the MIT occurs strikingly close to those filling factors where the liquid occupies 1/2 of the sample area (the percolation threshold condition in two-component media).
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Physical Review B |
| Subjects: | Q Science > QC Physics |
| Departments: | Faculty of Science and Technology > Physics |
| ID Code: | 57075 |
| Deposited By: | ep_importer_pure |
| Deposited On: | 05 Sep 2012 17:38 |
| Refereed?: | Yes |
| Published?: | Published |
| Last Modified: | 05 Sep 2012 17:38 |
| Identification Number: | |
| URI: | http://eprints.lancs.ac.uk/id/eprint/57075 |
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