Hall Conductivity in the Cosmic Defect and Dislocation Spacetime

Influences of topological defect and dislocation on conductivity behavior of charge carriers in external electromagnetic fields are studied. Particularly the quantum Hall effect is investigated in detail. It is found that the nontrivial deformations of spacetime due to topological defect and disloca...

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Published inChinese physics letters Vol. 33; no. 10; pp. 7 - 10
Main Author 马凯 王剑华 杨焕雄 樊华伟
Format Journal Article
LanguageEnglish
Published 01.10.2016
Subjects
宇宙
导电行为
扰动理论
拓扑缺陷
时空
电荷载体
量子霍尔效应
错位
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Summary:Influences of topological defect and dislocation on conductivity behavior of charge carriers in external electromagnetic fields are studied. Particularly the quantum Hall effect is investigated in detail. It is found that the nontrivial deformations of spacetime due to topological defect and dislocation produce an electric current at the leading order of perturbation theory. This current then induces a deformation on the Hall conductivity. The corrections on the Hall conductivity depend on the external electric fields, the size of the sample and the momentum of the particle.
Bibliography:11-1959/O4
Influences of topological defect and dislocation on conductivity behavior of charge carriers in external electromagnetic fields are studied. Particularly the quantum Hall effect is investigated in detail. It is found that the nontrivial deformations of spacetime due to topological defect and dislocation produce an electric current at the leading order of perturbation theory. This current then induces a deformation on the Hall conductivity. The corrections on the Hall conductivity depend on the external electric fields, the size of the sample and the momentum of the particle.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/33/10/100401