Signature of stripe pinning in optical conductivity

被引：20

作者：

Benfatto, L ^{[1
]}

Smith, CM ^{[1
]}

机构：

[1] Univ Fribourg, Dept Phys, CH-1700 Fribourg, Switzerland

来源：

PHYSICAL REVIEW B | 2003年 / 68卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.68.184513

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The response of charge stripes to an external electric field applied perpendicular to the stripe direction is studied within a diagrammatic approach for both weak and strong pinning by random impurities. The soundlike mode of the stripes described as elastic strings moves to finite frequency due to impurity pinning. By calculating the optical conductivity we determine this characteristic energy scale for both a single stripe and an array of interacting stripes. The results explain the anomalous far-infrared peak observed recently in optical-conductivity measurements on cuprates.

引用

页数：5

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