Please use this identifier to cite or link to this item:
http://acervodigital.unesp.br/handle/11449/8559
- Title:
- High-energy transitions of shallow magnetodonors in a GaAs/Al0.3Ga0.7As multiple quantum well
- Universidade Estadual Paulista (UNESP)
- Universidade de São Paulo (USP)
- Univ Instelling Antwerp
- SUNY Buffalo
- 0953-8984
- The high-energy states of a shallow donor in a GaAs/Ga0.7Al0.3As multiple-quantum-well structure subjected to a magnetic field in the growth direction are studied both theoretically and experimentally. Effects due to higher confinement subbands as well as due to the electron-phonon interaction are investigated. We show that most of the peaks in the infrared photoconductivity spectrum are due to direct transitions from the ground state to the m = +/-1 magnetodonor states associated with the first subband, but transitions to the m = +/-1 states of the third subband are also apparent. The remaining photoconductivity peaks are explained by phonon-assisted impurity transitions.
- 29-Oct-2001
- Journal of Physics-condensed Matter. Bristol: Iop Publishing Ltd, v. 13, n. 43, p. 9761-9772, 2001.
- 9761-9772
- Iop Publishing Ltd
- http://dx.doi.org/10.1088/0953-8984/13/43/307
- Acesso restrito
- outro
- http://repositorio.unesp.br/handle/11449/8559
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