Coherent phonon and electron spectroscopy on surfaces using time-resolved second-harmonic generation

被引：0
|
作者：
H.W.K. Tom
Y.M. Chang
H. Kwak
机构：
[1] Department of Physics,
[2] University of California,undefined
[3] Riverside,undefined
[4] CA 92521-7502,undefined
[5] USA (Fax: +1-909/787-4529,undefined
[6] E-mail: Harry.Tom@UCR.edu),undefined
来源：
Applied Physics B | 1999年 / 68卷
关键词：
PACS: 68.35.Ja; 78.47.+p; 73.20.-r;
D O I：
暂无
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学科分类号：
摘要：
(ω)Eprobe*(ω)|Eprobe(ω)|2. This is much easier to detect than transient grating, photon echo, or four-wave mixing schemes that use higher-order nonlinearities. We have applied this technique to measure the energy gap and dephasing time of the dangling bond interband transition on the GaAs(110)-relaxed (1×1) surface. Surface-carrier/surface-phonon interaction plays an important and perhaps dominant role in surface carrier dephasing consistent with the larger electron-phonon coupling on the surface compared to the bulk.
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页码：305 / 313
页数：8
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