Spin relaxation of two-dimensional electrons in a hall ferromagnet |
| |
Authors: | Yu A Nefyodov A A Fortunatov A V Shchepetilnikov and I V Kukushkin |
| |
Institution: | 1.Institute of Solid State Physics,Russian Academy of Sciences,Chernogolovka, Moscow region,Russia |
| |
Abstract: | Electron spin resonance in a system of two-dimensional electrons with a high electron mobility has been investigated and the
position, width, intensity, and line shape of the resonance microwave absorption have been studied as functions of the filling
factor and temperature. It has been shown that the ESR linewidth in high-electron-mobility GaAs/AlGaAs quantum wells may reach
30 MHz, which corresponds to a spin relaxation time of the two-dimensional electrons of 10 ns. The experimental data on the
linewidth of the spin resonance at a filling factor of 1 are compared with the theoretical results for various spin relaxation
mechanisms. It has been shown that the dominant mechanism of spin relaxation at a filling factor of 1 and a temperature of
1.5–4 K is the mutual scattering of spin excitons. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|