TITLE

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

AUTHOR(S)
Wu, H. Z.; Dai, N.; Johnson, M. B.; McCann, P. J.; Shi, Z. S.
PUB. DATE
April 2001
SOURCE
Applied Physics Letters;4/9/2001, Vol. 78 Issue 15, p2199
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
PbSe/PbSrSe multiple-quantum-well (MQW) structures were grown on BaF[sub 2](111) substrates by molecular-beam epitaxy and characterized by Fourier transform infrared transmission spectroscopy. To reduce unwanted Fabry-Pérot interference fringes, the top surface of the MQW samples was coated with an anti-interference film, enabling clear observation of subband transitions without superposed interference fringes. Transition energies involving longitudinal and oblique valleys were unambiguously resolved and are in good agreement with calculations made using the envelope wave function approximation.
ACCESSION #
4710513

 

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