Magnetic trap for excitons
| Autor: | F. Piazza, J.G.S. Lok, Peter C. M. Christianen, J.C. Maan, W.C. van der Vleuten |
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| Rok vydání: | 1998 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Magnetic moment Condensed matter physics Condensed Matter::Other Correlated Electron Systems / High Field Magnet Laboratory (HFML) Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Electron magnetic dipole moment Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Paramagnetism Magnetic trap Diamagnetism Electrical and Electronic Engineering Magnetic dipole Biexciton Quantum well |
| Zdroj: | Physica B-Condensed Matter, 251, 624-627 Physica B-Condensed Matter, 251, pp. 624-627 |
| ISSN: | 0921-4526 |
| DOI: | 10.1016/s0921-4526(98)00273-7 |
| Popis: | High in-plane magnetic field gradients are used to control the lateral motion of excitons in an InGaAs quantum well. The gradients, as large as 6.10 4 T/m, are produced by positioning a thin magnetized stripe of dysprosium on top of the quantum well. By measuring the exciton photoluminescence energy and intensity, spatially resolved with μm resolution, it is shown that the diamagnetic excitons are forced to regions of low magnetic field, because of the interaction of their magnetic moment with the inhomogeneous field. These results show the possibility to magnetically confine excitons to a limited region of space, which opens the way for the realization of the first magnetic trap in solids. |
| Databáze: | OpenAIRE |
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