MECHANISM OF ABSORPTION OF LIGHT BY FREE CONTINUUM POLARONS

被引:88
作者
KARTHEUSER, E
EVRARD, R
DEVREESE, J
机构
[1] Institut de Physique, Universite de Liege, Sart Tilman, Liege
[2] Institut de Physique, Physique Theorique, Universite de Liege, Sart Tilman, Liege
[3] Faculty of Science, University of Antwerp, Antwerp
[4] Solid State Physics Department, Studiecentrum voor Kernenergie, Mol-donk
关键词
D O I
10.1103/PhysRevLett.22.94
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The absorption of light by free continuum polarons is treated in the framework of the Landau-Pekar approach which for this problem is not restricted to strong coupling but gives at least the qualitative behavior for intermediate coupling (α3to6). The absorption curve consists of a relatively narrow zero-phonon peak and a broad sideband showing a multiphonon structure. The zero- and one-phonon contributions and the lowenergy part of the two-phonon contribution have been evaluated numerically. © 1969 The American Physical Society.
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页码:94 / +
页数:1
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