New observation of internal transitions of neutral and negatively charged donors by optically detected resonance spectroscopy
SCIE
SCOPUS
KCI
- Title
- New observation of internal transitions of neutral and negatively charged donors by optically detected resonance spectroscopy
- Authors
- Cheong, HD; Jeong, YH
- Date Issued
- 2002-07
- Publisher
- KOREAN PHYSICAL SOC
- Abstract
- We report an optically detected resonance (ODR) study of neutral and negatively charged donors in GaAs/AlGaAs quantum well structures. The intensity of the e(1)h(1) excitonic reflectance feature was modulated by resonant absorption of a monochromatic far-infrared (FIR) laser beam. The magnetic field was applied externally to bring the internal transitions among several impurity states into resonance with the far-infrared (FIR) photon energy. Internal transitions of neutral and negatively charged donors at the edge of the well were observed and were found to be in good agreement with theoretical calculations. These results demonstrate that the reflectance-based ODR technique is a useful tool for the study of donor states in semiconductor quantum wells.
- Keywords
- quantum well; GaAs/AsGaAs; internal transition; GAAS/ALGAAS QUANTUM-WELLS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/18983
- ISSN
- 0374-4884
- Article Type
- Article
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 41, no. 1, page. 144 - 148, 2002-07
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.