Resonant generation of nonequilibrium phonons in GaAs/AlAs quantum wells via intersubband scattering
- Univ. of California, Berkeley, CA (United States). Dept. of Physics
- Chinese Univ. of Hong Kong (Hong Kong)
The authors have studied the resonant intersubband scattering of optical phonons or RISOP theoretically and by picosecond scattering. Experimentally, the authors have established a way to determine phonon occupancy in quantum wells. The model calculation shows that a significant amount of long wavelength LO phonons are generated by RISOP in GaAs/A1As quantum wells. However, they measured a much smaller phonon population than predicted. The discrepancy can be explained by a breakdown of in-plane wavevector conservation due to interface roughness.
- Research Organization:
- Lawrence Berkeley Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 10192537
- Report Number(s):
- LBL--35940; CONF-9408155--11; ON: DE95002338
- Country of Publication:
- United States
- Language:
- English
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