Resonant interaction between local vibrational modes and extended lattice phonons in AlSb

被引：5
|
作者：
McCluskey, MD
Haller, EE
Walukiewicz, W
Becla, P
机构：
[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
[2] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA
来源：
DEFECTS IN SEMICONDUCTORS - ICDS-19, PTS 1-3 | 1997年 / 258-2卷
关键词：
local vibrational modes (LVM's); AlSb; DX centers; hydrogen;
D O I：
10.4028/www.scientific.net/MSF.258-263.1247
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Using infrared spectroscopy we have observed Se-H stretch and wag local vibrational modes (LVM's) in AlSb. The frequencies of the wag mode harmonics are explained by perturbation theory. In addition, there is evidence of a resonant interaction between LVM's and multi-phonon modes. This interaction leads to a splitting of the Se-H stretch mode into three peaks at 1606.3, 1608.6, and 1615.7 cm(-1) at liquid-helium temperatures. As the temperature or pressure is increased, the stretch mode and multi-phonon modes show anti-crossing behavior.
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页码：1247 / 1252
页数：6
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