| Record |
Author  |
Shah, Jagdeep; Pinczuk, A.; Gossard, A. C.; Wiegmann, W. |
| Title |
Energy-loss rates for hot electrons and holes in GaAs quantum wells |
Type |
Journal Article |
| Year |
1985 |
Publication |
Phys. Rev. Lett. |
Abbreviated Journal |
Phys. Rev. Lett. |
| Volume |
54 |
Issue |
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Pages |
2045-2048 |
| Keywords |
2DEG, GaAs/AlGaAs, heat flow, electron-phonon, hole-phonon, carrier-phonon, interactions |
| Abstract |
We report the first direct determination of carrier-energy-loss rates in a semiconductor. These measurements provide fundamental insight into carrier-phonon interactions in semiconductors. Unexpectedly large differences are found in the energy-loss rates for electrons and holes in GaAs/AlGaAs quantum wells. This large difference results from an anomalously low electron-energy-loss rate, which we attribute to the presence of nonequilibrium optical phonons rather than the effects of reduced dimensionality or dynamic screening. |
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633 |
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