Intersubband excitations in single-and double-layer electron systems in a parallel magnetic field
| العنوان: | Intersubband excitations in single-and double-layer electron systems in a parallel magnetic field |
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| المؤلفون: | V. E. Bisti, L. V. Kulik, I. V. Kukushkin, S. V. Tovstonog, V. E. Kirpichev |
| المصدر: | Journal of Experimental and Theoretical Physics. 101:717-727 |
| بيانات النشر: | Pleiades Publishing Ltd, 2005. |
| سنة النشر: | 2005 |
| مصطلحات موضوعية: | Physics, Dipole, Condensed matter physics, Condensed Matter::Other, General Physics and Astronomy, Electron, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Anisotropy, Electron magnetic dipole moment, Magnetic dipole, Quantum well, Excitation, Magnetic field |
| الوصف: | The spectrum of neutral intersubband excitations in single and double quantum wells has been studied by the inelastic light scattering method. It is shown that excitation energies in an external magnetic field have an anisotropic component proportional to the dipole moment of excitations along the growth axis of the quantum wells. Consequently, the measurement of excitation energy in a magnetic field makes it possible to experimentally estimate the quantitative measure of asymmetry of the quantum wells (dipole moment of the intersubband transition). In addition, a parallel magnetic field makes it possible to considerably extend the range of momenta studied since it shifts the dispersion curves in the momentum space by the value of the anisotropic component. A new method is proposed for determining the symmetry of double quantum wells. In asymmetric wells, intersubband excitations appear between the layers and have a large dipole moment along the growth axis. In symmetric wells, the magnetic field itself induces the dipole moment of intersubband excitations so that the excitation spectrum does not change upon magnetic field inversion. Analysis of energy anisotropy in intersubband excitations in double quantum wells makes it possible to determine the symmetry of double wells to a high degree of accuracy. |
| تدمد: | 1090-6509 1063-7761 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::7d7a76bbb9c8d2b06661fb38b15c142d https://doi.org/10.1134/1.2131941 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........7d7a76bbb9c8d2b06661fb38b15c142d |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 10906509 10637761 |
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