Tunnelling of Direct and Indirect Excitons in Slightly Asymmetric Double Quantum Wells

• Authors: D. Mazurenko , A. Akimov , E. Moskalenko , A. Zhmodikov , A. Kaplyanskii , L. Challis , T. Cheng , C. Foxon
• Languages of publication: EN

Abstracts

EN

We report the first studies of luminescence spectra from asymmetric double quantum wells of GaAs with widths around 100 Å differing by only one (2.8 Å) or two monolayers. Studies of the position and intensity of the direct and indirect exciton lines suggest the existence of acoustic phonon-assisted tunnelling between exciton states separated by a few meV. At temperatures 10-20 K the electron tunnelling process is fast enough to maintain thermal equilibrium between these direct and indirect excitons which are connected with holes in the same quantum well.

Keywords

EN

73.20.Dx; 63.20.Kr

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1996
• Volume: 90
• Issue: 5
• Pages: 895-898

Dates

published

1996-11

Contributors

author

D. Mazurenko

• A.F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, 26 Polytechnicheskaya Str., 194021, St. Petersburg, Russia

author

A. Akimov

• A.F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, 26 Polytechnicheskaya Str., 194021, St. Petersburg, Russia

author

E. Moskalenko

• A.F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, 26 Polytechnicheskaya Str., 194021, St. Petersburg, Russia

author

A. Zhmodikov

• A.F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, 26 Polytechnicheskaya Str., 194021, St. Petersburg, Russia

author

A. Kaplyanskii

• A.F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, 26 Polytechnicheskaya Str., 194021, St. Petersburg, Russia

author

L. Challis

• Physics Department, Nottingham University, University Park NG7 2RD, Nottingham, U.K.

author

T. Cheng

• Physics Department, Nottingham University, University Park NG7 2RD, Nottingham, U.K.

author

C. Foxon

• Physics Department, Nottingham University, University Park NG7 2RD, Nottingham, U.K.

Identifiers

DOI

10.12693/APhysPolA.90.895