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

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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.

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10 p.

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Bajaj, K.K.; Hiyamizu, S.; Jones, E.D.; Krivorotov, I.; Shimomura, S. & Shinohara, K. January 20, 1999.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

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.

Physical Description

10 p.

Notes

OSTI as DE00003233

Medium: P; Size: 10 pages

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  • SPIE International Symposium on Optoelectronics '99 - Physics and Simulation of Optoelectronic Devices VII, San Jose, CA (US), 01/23/1999--01/29/1999

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  • Report No.: SAND98-1481C
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 3233
  • Archival Resource Key: ark:/67531/metadc679815

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  • January 20, 1999

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  • July 25, 2015, 2:20 a.m.

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  • April 6, 2017, 6:58 p.m.

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Bajaj, K.K.; Hiyamizu, S.; Jones, E.D.; Krivorotov, I.; Shimomura, S. & Shinohara, K. Magneto-Excitons in (411)A and (100)-Oriented GaAs/AlGaAs Multiple Quantum Well Structures, article, January 20, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc679815/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.