Observation of Wannier-Stark localization in shallow superlattices

Keith W. Goossen; John E. Cunningham; William Jan

doi:10.1117/12.137621

3 September 1992 Observation of Wannier-Stark localization in shallow superlattices

Keith W. Goossen, John E. Cunningham, William Jan

Proceedings Volume 1675, Quantum Well and Superlattice Physics IV; (1992) https://doi.org/10.1117/12.137621
Event: Semiconductors '92, 1992, Somerset, NJ, United States

Abstract

Surprisingly, the onset of superlattice (SL)-type electroabsorption (EA) (localization/delocalization and Stark ladder phenomena) as multi-quantum well (MQW) barriers are lowered does not correlate with miniband width. As the barriers of a 100/100 angstroms GaAs/Al_xGa_-1As MQW are lowered to x equals 0.01, similar (quantum confined Stark effect) EA as for x equals 0.3 samples is seen. For x equals 0.02, as the MQW period (d) is shortened to 140 angstroms, SL-type EA is observed but does not correlate with miniband width. This shows that standard models do not apply for shallow systems. For x equals 0.07 and d equals 175 angstroms SL effects consistent with standard models are observed.

Citation Download Citation

Keith W. Goossen, John E. Cunningham, and William Jan "Observation of Wannier-Stark localization in shallow superlattices", Proc. SPIE 1675, Quantum Well and Superlattice Physics IV, (3 September 1992); https://doi.org/10.1117/12.137621

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