Magneto-Excitons in (411)A and (100)-Oriented GaAs/AlGaAs Multiple Quantum Well Structures

Conference · Wed Jan 20 00:00:00 EST 1999

OSTI ID:3233

Bajaj, K K; Hiyamizu, S; Jones, E D; Krivorotov, I; Shimomura, S; Shinohara, K

We report magneto-exciton spectroscopy studies of (411)A and (100)-oriented GaAs/Al{sub 0.3}Ga{sub 0.7}As multiquantum well structures. The samples consisted of seven GaAs quantum wells with widths varying between 0.6 and 12nm, were grown on (411)A and (100)-oriented GaAs substrates. The exciton diamagnetic energy shifts and linewidths were measured between 0 and 14T at 1.4K The dependence of the exciton diamagnetic shifts with magnetic field were calculated using a variational approach and good agreement with experiment for both substrate orientations was found.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 3233
• Report Number(s): SAND98-1481C; TRN: AH200112%%297
• Resource Relation: Conference: SPIE International Symposium on Optoelectronics '99 - Physics and Simulation of Optoelectronic Devices VII, San Jose, CA (US), 01/23/1999--01/29/1999; Other Information: PBD: 20 Jan 1999
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
GALLIUM ARSENIDES
ALUMINIUM ARSENIDES
EXCITONS
MAGNETIC FIELDS
ENERGY-LEVEL TRANSITIONS