SOFT PHONON MODE IN SNTE

被引:19
作者
GILLIS, NS
机构
[1] Sandia Laboratories, Albuquerque, NM
关键词
D O I
10.1103/PhysRevLett.22.1251
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The self-consistent phonon formalism, successful in the description of the quantum crystals He3 and He4, is here applied to a discussion of the soft k=0 TO mode in SnTe. Straightforward considerations allow us to arrive at a simple expression for ωTO2(k=0) in the low-temperature regime. The analysis permits a quantitative fit to the temperature dependence of ωTO2(k=0) over a rather wide range of temperature. © 1969 The American Physical Society.
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页码:1251 / &
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