Dynamical mean field theory study of the linear and nonlinear optics of Kondo systems

被引：0
|
作者：
Jafari, S. Akbar [1 ]
Tohyama, Takami
Maekawa, Sadamichi
机构：
[1] Tohoku Univ, Mat Res Inst, Sendai, Miyagi 9808577, Japan
[2] Isfahan Univ Technol, Dept Phys, Esfahan 84156, Iran
[3] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan
[4] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2007年 / 76卷 / 04期
关键词：
Kondo systems; optical conductivity; third harmonic generation;
D O I：
10.1143/JPSJ.76.044706
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study linear and nonlinear optical properties of d-electron Kondo system. The effect of Kondo resonance in optical conductivity is to creat a remarkable peak inside the gap. In third harmonic generation spectra also there appear structures inside the gap which correspond to three and two-photon processes from lower Hubbard band to the Kondo resonance state. Behavior of two and four-current correlations near to nu approximate to 0 in Kondo regime can be understood by an asymptotic analysis which reveals a marked difference between two and four-current correlations.
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页数：4
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