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Theoretical study of modulated absorption spectra: from quantum wire to quantum dot

✍ Scribed by R.B. Chen; Yan-Ten Lu

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
221 KB
Volume
264
Category
Article
ISSN
0375-9601

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✦ Synopsis

We studied the electro-absorption spectra for tetragonal systems under an electric field of intensity 50 kVrcm or 30 .

Ž

. Ž . kVrcm . The small lateral size 50 = 50 A allows the observance of one-dimensional characteristic wire-like Franz-Ž . Keldysh oscillation FKO for tetragons of length longer than 500 A. The quantum confine effect dominates for shorter Ž . tetragons dot-like . The wire-like to dot-like transition can be clearly demonstrated by examining the FKO characteristic peaks in the scaling Fourier transformation of modulation spectra.

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