Dissociation of indirect excitons: Discontinuity and bistability in the tunnel current of single-barrier heterostructures
| Autor: | P. C. Main, Mohamed Henini, A. Parlangeli, Andre K. Geim, Laurence Eaves, J.C. Maan, Pcm Christianen |
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| Rok vydání: | 1999 |
| Předmět: |
Physics
Discontinuity (geotechnical engineering) Condensed matter physics Bistability Exciton Heterojunction Correlated Electron Systems / High Field Magnet Laboratory (HFML) Electron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect GeneralLiterature_REFERENCE(e.g. dictionaries encyclopedias glossaries) Dissociation (chemistry) Quantum tunnelling Magnetic field |
| Zdroj: | Scopus-Elsevier Physical Review. B, Condensed Matter and Materials Physics, 60, 13302-13305 Physical Review. B, Condensed Matter and Materials Physics, 60, 19, pp. 13302-13305 |
| ISSN: | 1098-0121 0163-1829 |
| DOI: | 10.1103/physrevb.60.13302 |
| Popis: | We observed a new discontinuity and bistability in the tunnel current of a 12-nm single-barrier GaAs/AlAs p-i-n heterostructure where a system of spatially separated two-dimensional electron and hole (e-h) layers of equal and tunable density is realized. Both features appear at T less than or similar to 300 mK and are substantially enhanced in a magnetic field B greater than or similar to 10 T perpendicular to the layers. They correspond to a discontinuity in the e-h density and in the phase of the current magneto-oscillations, which we suggest to arise from a transition between indirect excitons and the uncoupled e-h gases. [S0163-1829(99) 12343-9]. |
| Databáze: | OpenAIRE |
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