Excitonic cluster model of strongly correlated electronic systems

被引：7

作者：

Hanamura, E ^{[1
]}

Dan, NT

Tanabe, Y

机构：

[1] Univ Arizona, Ctr Opt Sci, Tucson, AZ 85721 USA

[2] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 113, Japan

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2000年 / 12卷 / 22期

关键词：

D O I：

10.1088/0953-8984/12/22/103

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

An excitonic cluster model is proposed to describe the optical responses of strongly correlated electronic systems, e.g. antiferromagnetic insulators of parent crystals of high-temperature superconductors. This model can take into account both the strong correlation effect of 3d-electrons and the itinerant nature of electronic excitations. Consequently both the electron-hole bound and unbound states can be described on the same footing. As a result, we can resolve the mystery of resonance enhancement of 2-magnon Raman scattering, and remove inconsistencies in the understanding of the absorption spectrum, the photoconductivity spectrum, and large-shift Raman signals.

引用

页码：L345 / L352

页数：8

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