Critical thickness of quantum well for observing Franz-Keldysh oscillation

R. B. Chen, Yan Ten Lu

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

Using scaling Fourier transformation (FT), we study the electro-reflectance spectra of quantum wells (QW) with well thickness from 200 to 1500 angstroms under a built-in electric field 50 kV/cm. For wider QWs, the FT of the spectra with energy scaled in (ℏω-Eg)3/2 exhibits Franz-Keldysh oscillation characteristic peaks. On the contrary, for the narrower QWs the characteristic peak of quantum confinement can be observed in FT with energy scaled in √ℏω-Eg. By comparing the Fourier spectra, we set the transition width at 600 angstroms, which is much larger and more realistic than those reported previously.

原文English
頁(從 - 到)117-120
頁數4
期刊Solid State Communications
114
發行號3
DOIs
出版狀態Published - 2000 三月 21

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 凝聚態物理學
  • 材料化學

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