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EnglishWe study the quantum Hall liquid and the metal–insulator transition in a high-mobility two-dimensional electron gas, by means of photoluminescence and magnetotransport measurements. In the integer and fractional regime at nu > 1/3, by analyzing the emission energy dispersion we probe the magneto-Coulomb screening and the hidden symmetry of the electron liquid. In the fractional regime above nu = 1/3, the system undergoes metal-toinsulator transition, and in the insulating phase the dispersion becomes linear with evidence of an increased renormalized mass.
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| Titolo: | Optical probing of the metal-to-insulator transition in a two-dimensional high-mobility electron gas |
| Autori: | |
| Data di pubblicazione: | 2011 |
| Rivista: | |
| Abstract: | We study the quantum Hall liquid and the metal–insulator transition in a high-mobility two-dimensional electron gas, by means of photoluminescence and magnetotransport measurements. In the integer and fractional regime at nu > 1/3, by analyzing the emission energy dispersion we probe the magneto-Coulomb screening and the hidden symmetry of the electron liquid. In the fractional regime above nu = 1/3, the system undergoes metal-toinsulator transition, and in the insulating phase the dispersion becomes linear with evidence of an increased renormalized mass. |
| Handle: | http://hdl.handle.net/11571/273504 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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