CARRIER-CARRIER SCATTERING - AN EXPERIMENTAL COMPARISON OF BULK GAAS AND GAAS/ALXGA1-X AS QUANTUM-WELLS

被引:28
|
作者
KASH, JA
机构
[1] IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights
来源
PHYSICAL REVIEW B | 1993年 / 48卷 / 24期
关键词
D O I
10.1103/PhysRevB.48.18336
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The energy loss of a hot electron to a thermalized electron-hole plasma has been studied using, the optical recombination of a hot electron at a neutral acceptor. The dependence of the energy-loss rate on plasma density was measured in both bulk and quantum-well samples. In bulk, the energy-loss rate is significantly sublinear as a result of screening. In quantum wells, the rate is nearly linear in plasma density, showing that screening is less important. Measurements in an asymmetric coupled-well sample show that the interaction between a hot electron in one well and a plasma in an adjacent well is much weaker than if they are in the same well.
引用
收藏
页码:18336 / 18339
页数:4
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