Photoinduced Change in the Spin State of Itinerant Correlated Electron Systems

被引：34
|
作者：
Kanamori, Y. [1 ]
Matsueda, H. [2 ]
Ishihara, S. [1 ,3 ]
机构：
[1] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan
[2] Sendai Natl Coll Technol, Sendai, Miyagi 9893128, Japan
[3] CREST, Sendai, Miyagi 9808578, Japan
来源：
PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 16期
关键词：
TRANSITION; LACOO3;
D O I：
10.1103/PhysRevLett.107.167403
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A photoinduced spin-state change in the itinerant correlated electron system is studied. A photon introduced in the low-spin band insulator induces a bound state of the high-spin state and a photoexcited hole. This bound state brings a characteristic peak in the pump-probe optical absorption spectra which are completely different from the spectra in thermal-excited states. The present results well explain the recent experiments of the ultrafast optical spectroscopy in perovskite cobaltites.
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页数：5
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