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Coupling of confined impurity states in doped double-quantum-well structures

Radha Ranganathan, B. D. McCombe, N. Nguyen, Y. Zhang, M. L. Rustgi, and W. J. Schaff
Phys. Rev. B 44, 1423(R) – Published 15 July 1991
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Abstract

Far-infrared magnetotransmission investigations have revealed coupling effects on hydrogenic impurity states in doped GaAs/Al0.3Ga0.7As coupled double quantum wells. Impurity transitions of the well-center donors were measured in several samples with identical well widths but different narrow barrier widths. Results agree with variational calculations for all samples when intersubband mixing and the difference in the masses in the well and barrier are taken into account. Evidence for intersubband mixing in double wells is also provided.

  • Received 30 April 1991

DOI:https://doi.org/10.1103/PhysRevB.44.1423

©1991 American Physical Society

Authors & Affiliations

Radha Ranganathan, B. D. McCombe, N. Nguyen, Y. Zhang, and M. L. Rustgi

  • State University of New York at Buffalo, Buffalo, New York 14260

W. J. Schaff

  • Cornell University, Ithaca, New York 14853

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Vol. 44, Iss. 3 — 15 July 1991

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