Study on the confined states in single surface quantum wells

Autor:	G.L Shi, Wendong Xu, W.Y Cai, P.P Chen, Z. F. Li, W. J. Lu, Z.L Miao, S. C. Shen
Rok vydání:	2000
Předmět:	Surface (mathematics) Physics Excited state Reflectance spectroscopy Effective mass approximation General Physics and Astronomy Electron Atomic physics Spectral line Quantum well Molecular beam epitaxy
Zdroj:	Physics Letters A. 273:271-275
ISSN:	0375-9601
DOI:	10.1016/s0375-9601(00)00504-1
Popis:	We have studied the optical properties of surface quantum wells with different width of wells (5 nm and 10 nm) by in-situ photo-modulated reflectance spectroscopy on molecular beam epitaxy (MBE) system. The single surface quantum well (SQW) is confined by the vacuum on one side and by Al 0.3 Ga 0.7 As barrier on the other side. In experiments, we have observed clearly the transitions from the confined hole states to the confined electron states. The transitions between those excited states in 10 nm surface quantum well are observed for the first time. The effects of the surface on the confined states have been well studied by combination of the PR spectra and the effective mass approximation theory.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bdbf829c561bb756472337395a47af00 https://doi.org/10.1016/s0375-9601(00)00504-1 Zobrazit plný text záznamu Full Text from ScienceDirect