Observation of enhanced lateral confinement of excitons in GaAs quantum wires with various sizes (7–30 nm) by magnetophotoluminescence measurements
Nagamune, Y. ; Tanaka, T. ; Kono, T. ; Tsukamoto, S. ; Nishioka, M. ; Arakawa, Y. ; Uchida, K. ; Miura, N.
Woodbury, NY : American Institute of Physics (AIP)
Published 1995
Woodbury, NY : American Institute of Physics (AIP)
Published 1995
| ISSN: |
1077-3118
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
We investigated magnetophotoluminescence spectra up to 40 T of GaAs quantum wires with various lateral widths (7–30 nm) grown by the selective metalorganic chemical vapor deposition. The photoluminescence peak shift due to the magnetic fields is more suppressed with decreasing the wire width. The observed energy shift was in good agreement with the calculation based on a variation method. These results clearly demonstrate existence of the two-dimensional confinement effect and enhanced binding energy of excitons. In the narrowest wire (7 nm), however, comparison of the experimental results with the calculation indicates penetration of exciton wavefunction from the two-dimensional potential to the barrier region. © 1995 American Institute of Physics.
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| Type of Medium: |
Electronic Resource
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| URL: |