Charge relaxation and dephasing in Coulomb-coupled conductors

被引：57

作者：

Büttiker, M ^{[1
]}

Martin, AM ^{[1
]}

机构：

[1] Univ Geneva, Dept Phys Theor, CH-1211 Geneva 4, Switzerland

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.61.2737

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dephasing time in coupled mesoscopic conductors is caused by the fluctuations of the dipolar charge permitted by the long-range Coulomb interaction. We relate the phase breaking time to elementary transport coefficients that describe the dynamics of this dipole: the capacitance, an equilibrium charge relaxation resistance, and in the presence of transport through one of the conductors a nonequilibrium charge relaxation resistance. The discussion is illustrated for a quantum point contact in a high magnetic field in proximity to a quantum dot.

引用

页码：2737 / 2741

页数：5

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