Optical properties of the Holstein-t-J model from dynamical mean-field theory

被引：0
|
作者：
Cappelluti, E. [1 ,2 ]
Ciuchi, S. [3 ,4 ,5 ]
Fratini, S. [6 ]
机构：
[1] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[2] CNR, INFM, SMC Res Ctr & ISC, I-00185 Rome, Italy
[3] Univ Aquila, INFM, I-67010 Coppito, Italy
[4] Univ Aquila, Dipartimento Fis, I-67010 Coppito, Italy
[5] CNRS, Inst Neel, F-38042 Grenoble, France
[6] Univ Grenoble 1, F-38042 Grenoble, France
来源：
PHYSICA B-CONDENSED MATTER | 2008年 / 403卷 / 5-9期
关键词：
magnetic/lattice polarons; spin fluctuations; optical conductivity; cuprates;
D O I：
10.1016/j.physb.2007.10.107
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We employ dynamical mean-field theory to study the optical conductivity sigma(omega) of one hole in the Holstein-t-J model. We provide an exact solution for sigma(omega) in the limit of infinite connectivity. We apply our analysis to Nd2-xCexCuO4. We show that our model can explain many features of the optical conductivity in this compounds in terms of magnetic/lattice polaron formation. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1181 / 1183
页数：3
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