Effect of electric fields on excitons in a coupled double-quantum-well structure

作者：Y. J. Chen, Emil S. Köteles, Boris S. Elman, Craig A. Armiento · 发表于：Physical review. B, Condensed matter · 年份：1987 · DOI：10.1103/physrevb.36.4562 · 被引用次数：198 · 研究领域：Semiconductor Quantum Structures and Devices、Quantum and electron transport phenomena、Quantum Information and Cryptography

We present a detailed experimental study of the influence of electric fields on exciton states in a $\mathrm{GaAs}/{\mathrm{Al}}_{x}{\mathrm{Ga}}_{1\ensuremath{-}x}\mathrm{As}$ double-quantum-well structure. Both intrawell and interwell exciton transitions were observed. The coupling of electronic levels in the two quantum wells leads to an enhancement of the quantum-confined Stark effect (as much as 5 times that of the single-quantum-well case). From the measured exciton transitions, splittings of the quantum confined levels in a coupled double-quantum-well structure were derived without recourse to a theoretical model.