Spin relaxation time, spin dephasing time and ensemble spin dephasing time in n-type GaAs quantum wells
| Autor: | Jinluo Cheng, M. W. Wu, I. C. da Cunha Lima, C. Lü |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Physics
Condensed Matter - Materials Science Spin polarization Condensed matter physics Condensed Matter::Other Scattering Dephasing Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Mathematics::General Topology General Physics and Astronomy Electron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Thermal conduction Condensed Matter - Other Condensed Matter Bloch equations Condensed Matter::Strongly Correlated Electrons Quantum well Other Condensed Matter (cond-mat.other) Spin-½ |
| Zdroj: | Physics Letters A. 365:501-504 |
| ISSN: | 0375-9601 |
| Popis: | We investigate the spin relaxation and spin dephasing of $n$-type GaAs quantum wells. We obtain the spin relaxation time $T_1$, the spin dephasing time $T_2$ and the ensemble spin dephasing time $T_2^{\ast}$ by solving the full microscopic kinetic spin Bloch equations, and we show that, analogous to the common sense in an isotropic system for conduction electrons, $T_1$, $T_2$ and $T_2^{\ast}$ are identical due to the short correlation time. The inhomogeneous broadening induced by the D'yakonov-Perel term is suppressed by the scattering, especially the Coulomb scattering, in this system. 4 pages, 2 figures, to be published in Phys. Lett. A |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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