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Quantization of excitons in CuCl epitaxial thin films: Behavior between a two-dimensional quantum well and the bulk
Tang Z.K.2; Yanase A.2; Segawa Y.2; Matsuura N.1; Cho K.1
1995
Source PublicationPhysical Review B
ISSN01631829
Volume52Issue:4Pages:2640-2648
AbstractA study of quantized excitons in CuCl epitaxial thin films is reported. Film thicknesses (L) that are much smaller than the photon wavelength () in the medium (160 nm), but larger than the exciton Bohr radius aB (0.7 nm), are considered here. Many structures have been observed in transmission and absorption spectra over the Z3 exciton region. When L<30 nm, these structures correspond well to the confined exciton levels with odd quantum number n. The oscillator strength for the nth quantized exciton is found to be proportional to L/n2 for odd n and zero for even n. The absence of the states with even n in the optical spectra is interpreted in terms of the parity selection rule in the confined exciton system where the long-wavelength approximation holds. The measured optical spectra are compared with the additional-boundary condition-free response theory. Polariton-interference fringes given by the theory demonstrate a good agreement with the experimental results both for thick and thin films. By analyzing the absorption line shape, the dependence of nonradiative damping of the quantized exciton on quantum number n and film thickness L is discussed. © 1995 The American Physical Society.
DOI10.1103/PhysRevB.52.2640
URLView the original
Language英語
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Cited Times [WOS]:21   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Osaka University
2.RIKEN (The Institute of Physical and Chemical Research)
Recommended Citation
GB/T 7714
Tang Z.K.,Yanase A.,Segawa Y.,et al. Quantization of excitons in CuCl epitaxial thin films: Behavior between a two-dimensional quantum well and the bulk[J]. Physical Review B,1995,52(4):2640-2648.
APA Tang Z.K.,Yanase A.,Segawa Y.,Matsuura N.,&Cho K..(1995).Quantization of excitons in CuCl epitaxial thin films: Behavior between a two-dimensional quantum well and the bulk.Physical Review B,52(4),2640-2648.
MLA Tang Z.K.,et al."Quantization of excitons in CuCl epitaxial thin films: Behavior between a two-dimensional quantum well and the bulk".Physical Review B 52.4(1995):2640-2648.
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