A study of Franz-Keldysh oscillations in the photo reflectance spectrum df the delta-doped GaAs film

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/39166

Title:	A study of Franz-Keldysh oscillations in the photo reflectance spectrum df the delta-doped GaAs film
Authors:	Wang,DP;Chen,CT;Hsu,TM
Contributors:	物理研究所
Keywords:	SURFACE FERMI LEVEL;001 N-TYPE;DEPLETION REGION;PHOTOREFLECTANCE;ELECTROREFLECTANCE
Date:	1996
Issue Date:	2010-07-08 14:06:59 (UTC+8)
Publisher:	中央大學
Abstract:	Our photo reflectance (PR) spectroscopy measurements of the delta-doped GaAs film at 300 K reveal many Franz-Keldysh oscillations (FKOs) above the valence band edge, E(0) and the spin-orbit split energy, E(0)+Delta(0) which enables us to determine the electric field strength from periods of FKOs provided reduced masses of the electron and holes are known. The reduced masses can be determined unambiguously at E(0)+Delta(0), but not at E(0), at which the heavy- and light-hole transitions are degenerate. However, the ambiguity at E(0) can be resolved by applying the fast Fourier transform to the PR spectrum to separate the contributions from the heavy and light holes. (C) 1996 American Institute of Physics.
Relation:	JOURNAL OF APPLIED PHYSICS
Appears in Collections:	[Graduate Institute of Physics] journal & Dissertation

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