报告题目 | Spin dynamics in one dimension: any surprises? |
报告人 | Prof. Dr. E. Ya. Sherman |
报告人单位 | The University of the Basque Country, SPAIN |
报告时间 | 2011-12-07 |
报告地点 | 合肥微尺度物质科学国家实验室9004会议室 |
主办单位 | 合肥微尺度物质科学国家实验室 |
报告介绍 | We consider optically injected charge and spin currents in semiconductor quantum wells. The injection can be done by quantum optics techniques with the interference of the one- and two-photon transition processes, by intersubband light absorption, and by a stimulated Raman process. The final state with the injected currents strongly depends on the injection process, producing the system very strongly out of the equilibrium for the interband transitions and relatively weakly out of the equilibrium for the Raman process. In addition to the directly injected, the resulting spin currents can arise due to the spin-dependent scattering of electrons by excited holes. The resulting patterns of charge and spin densities will be analyzed. We show that the charge current evolution can have a universal character, independent on the system details.
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