Second-harmonic generation spectroscopy on reconstructed Si(111) surfaces

被引：4
|
作者：
Pedersen, K [1 ]
Morgen, P [1 ]
机构：
[1] Univ Aalborg, Inst Phys, DK-9220 Aalborg, Denmark
来源：
PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 0, NO 8 | 2003年 / 0卷 / 08期
关键词：
D O I：
10.1002/pssc.200303849
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Optical second harmonic generation spectra obtained from the clean 7x7 surface are compared to those of surfaces with Au and Ag induced (root3 x root3)-reconstructions. All three reconstructions lead to broad spectra in the region below the bulk direct interband transition energy due to excitation of surface states. Variations in the spectra with sample temperature and oxygen exposure have been used to identify resonances in the spectra. In this way several transitions consistent with energy separations between surface states known from photoemission have been identified. (C) 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：3065 / 3069
页数：5
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