Voltage profile and four-terminal resistance of an interacting quantum wire

被引：12

作者：

Arrachea, Liliana ^{[1
,2
,3
]}

机构：

[1] Univ Zaragoza, Dept Fis Mat, E-50009 Zaragoza, Spain

[2] Univ Zaragoza, BIFI, E-50009 Zaragoza, Spain

[3] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, RA-1428 Buenos Aires, DF, Argentina

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.77.233105

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the behavior of the four-terminal resistance R(4pt) in a quantum wire described by a Luttinger liquid in two relevant situations: (i) in the presence of a single impurity within the wire and (ii) under the effect of asymmetries introduced by disordered voltage probes. In the first case, interactions leave a signature in a power-law behavior of R(4pt) as a function of the voltage V and the temperature T. In the second case interactions tend to mask the effect of the asymmetries. In both scenarios the occurrence of negative values of R(4pt) is explained in simple terms.

引用

页数：4

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