OBSERVATION OF ELECTRONIC STATES CONFINED IN SURFACE QUANTUM-WELLS AND ABOVE QUANTUM BARRIERS WITH MODULATED REFLECTIVITY

Authors
PARKS C RAMDAS AK MELLOCH MR STEBLOVSKY G RAMMOHAN LR LUO H
Citation
C. Parks et al., OBSERVATION OF ELECTRONIC STATES CONFINED IN SURFACE QUANTUM-WELLS AND ABOVE QUANTUM BARRIERS WITH MODULATED REFLECTIVITY, Solid state communications, 92(7), 1994, pp. 563-567
Citations number
20
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
92
Issue
7
Year of publication
1994
Pages
563 - 567
Database
ISI
SICI code
0038-1098(1994)92:7<563:OOESCI>2.0.ZU;2-#
Abstract
The modulated reflectivity spectra of a surface quantum well, composed of vacuum/GaAs/Al(x)Ga1-xAs, exhibit in a striking manner optical tra nsitions associated with electronic states confined within the quantum well. The spectra reveal numerous distinct signatures of the transiti ons between quantum confined states in the GaAs surface layer, their e nergies demonstrably controlled by its width. Equally remarkable signa tures appear, which can be traced to localized electronic levels above the AlxGa1-xAs single quantum barrier formed by this structure.