Franz-Keldysh oscillations and Wannier-Stark localization in GaAs/AlAs superlattices

Harald Schneider; A. Fischer; Klaus H. Ploog

doi:10.1117/12.137625

3 September 1992 Franz-Keldysh oscillations and Wannier-Stark localization in GaAs/AlAs superlattices

Harald Schneider, A. Fischer, Klaus H. Ploog

Proceedings Volume 1675, Quantum Well and Superlattice Physics IV; (1992) https://doi.org/10.1117/12.137625
Event: Semiconductors '92, 1992, Somerset, NJ, United States

Abstract

We have studied the electroabsorption properties of GaAs/AlAs superlattices with a 1 monolayer (ML) and 2 ML wide AlAs barriers. At large electric fields F parallel to the growth direction, Wannier-Stark localization of the carrier states is observed, even for the case of 1 ML AlAs barriers. In the low-field regime (up to 60 kV/cm), Franz-Keldysh oscillations are found. These oscillations are associated with the miniband dispersion of the superlattice. The oscillation period shows an F^2/3 behavior, as theoretically expected. Numerical calculations on electroabsorption in strongly coupled superlattices are also presented.

Citation Download Citation

Harald Schneider, A. Fischer, and Klaus H. Ploog "Franz-Keldysh oscillations and Wannier-Stark localization in GaAs/AlAs superlattices", Proc. SPIE 1675, Quantum Well and Superlattice Physics IV, (3 September 1992); https://doi.org/10.1117/12.137625

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available