Surface vibrational modes of α-quartz(0001) probed by sum-frequency spectroscopy

被引：43
|
作者：
Liu, Wei-Tao [1 ]
Shen, Y. R. [1 ]
机构：
[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
来源：
PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 01期
关键词：
D O I：
10.1103/PhysRevLett.101.016101
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Infrared-visible sum-frequency spectroscopy was used to probe surface vibrations of alpha-quartz(0001) under ambient conditions. Two modes at 880 and 980 cm(-1) were observed and identified as arising from Si-O-Si and Si-OH structures of the surface. Heat treatment and hydroxylation could convert Si-OH to Si-O-Si and vice versa. The technique is generally applicable to studies of surface phonons of other oxides, semiconductors, and insulators.
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页数：4
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