Unambiguous observation of subband transitions from longitudinal valley and oblique valleys in IV-VI multiple quantum wells

Authors
Wu, HZ Dai, N Johnson, MB McCann, PJ Shi, ZS
Citation
Hz. Wu et al., Unambiguous observation of subband transitions from longitudinal valley and oblique valleys in IV-VI multiple quantum wells, APPL PHYS L, 78(15), 2001, pp. 2199-2201
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
78
Issue
15
Year of publication
2001
Pages
2199 - 2201
Database
ISI
SICI code
0003-6951(20010409)78:15<2199:UOOSTF>2.0.ZU;2-2
Abstract
PbSe/PbSrSe multiple-quantum-well (MQW) structures were grown on BaF2(111) substrates by molecular-beam epitaxy and characterized by Fourier transform infrared transmission spectroscopy. To reduce unwanted Fabry-Perot interfe rence fringes, the top surface of the MQW samples was coated with an anti-i nterference film, enabling clear observation of subband transitions without superposed interference fringes. Transition energies involving longitudina l and oblique valleys were unambiguously resolved and are in good agreement with calculations made using the envelope wave function approximation. (C) 2001 American Institute of Physics.