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First observation of anomalously large blueshift of apparent donor-acceptor pair transition peak in compensation-doped quantum wells

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5 Author(s)
Ding, Y.J. ; Dept. of Phys. & Astron., Bowling Green State Univ., OH, USA ; Korotkov, R.Y. ; Khurgin, J.B. ; Rabinovich, W.S.
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Summary form only given.Previously, in undoped and doped bulk GaAs with donor and acceptor densities, the maximum amount of blueshift of the donor-acceptor pair (DAP) transition peak observed is only -3 meV. For the first time, to the best of our knowledge, we have observed anomalously large blueshift of the DAP transition peak (-11 meV) in compensation-doped asymmetric-coupled quantum wells (QWs). Our sample was grown by MBE on a semi-insulating GaAs substrate. The epitaxial layers consist of 20 periods, each of which is composed of two GaAs QWs, respectively, coupled by a Al/sub 0.53/Ga/sub 0.47/As barrier.

Published in:

Quantum Electronics Conference, 1998. IQEC 98. Technical Digest. Summaries of papers presented at the International

Date of Conference:

8-8 May 1998