Transport of Indirect Excitons in High Magnetic Fields
| Autor: | Joe Wilkes, Egor A. Muljarov, E. V. Calman, K. L. Campman, Chelsey Dorow, Arthur C. Gossard, Leonid Butov, Y. Y. Kuznetsova |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Physics
Photoluminescence Condensed Matter - Mesoscale and Nanoscale Physics Exciton FOS: Physical sciences 02 engineering and technology Landau quantization Electron 021001 nanoscience & nanotechnology Laser Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 7. Clean energy 01 natural sciences Magnetic field law.invention Effective mass (solid-state physics) law 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Atomic physics 010306 general physics 0210 nano-technology Excitation QC |
| ISSN: | 2469-9950 |
| Popis: | We present spatially- and spectrally-resolved photoluminescence measurements of indirect excitons in high magnetic fields. Long indirect exciton lifetimes give the opportunity to measure magnetoexciton transport by optical imaging. Indirect excitons formed from electrons and holes at zeroth Landau levels (0e - 0h indirect magnetoexcitons) travel over large distances and form a ring emission pattern around the excitation spot. In contrast, the spatial profiles of 1e - 1h and 2e - 2h indirect magnetoexciton emission closely follow the laser excitation profile. The 0e - 0h indirect magnetoexciton transport distance reduces with increasing magnetic field. These effects are explained in terms of magnetoexciton energy relaxation and effective mass enhancement. |
| Databáze: | OpenAIRE |
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