Capacitance, Charge Fluctuations and Dephasing In Coulomb Coupled Conductors

Buttiker, Markus

doi:10.1007/3-540-45532-9_8

Proceedings chapter

English

Capacitance, Charge Fluctuations and Dephasing In Coulomb Coupled Conductors

Contributors

Buttiker, Markus

Published in

R. Haug, H. Schoeller (Ed.), Interacting Electrons in Nanostructures, p. 149-164

Publisher

Berlin : Springer

Collection

Lecture Notes in Physics; 579

Publication date

2001

Abstract

The charge fluctuations of two nearby mesoscopic conductors coupled only via the long range Coulomb force are discussed and used to find the dephasing rate which one conductor exerts on the other. The discussion is based on a formulation of the scattering approach for charge densities and the density response to a fluctuating potential. Coupling to the Poisson equation results in an electrically self-consistent description of charge fluctuations. At equilibrium the low-frequency noise power can be expressed with the help of a charge relaxation resistance (which together with the capacitance determines the RC-time of the structure). In the presence of transport the low frequency charge noise power is determined by a resistance which reflects the presence of shot noise. We use these results to derive expressions for the dephasing rates of Coulomb coupled conductors and to find a self-consistent expression for the measurement time.

Keywords

Mesoscopic systems and quantum hall effect
Condensed matter

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique théorique

Citation (ISO format)

BUTTIKER, Markus. Capacitance, Charge Fluctuations and Dephasing In Coulomb Coupled Conductors. In: Interacting Electrons in Nanostructures. R. Haug, H. Schoeller (Ed.). Berlin : Springer, 2001. p. 149–164. (Lecture Notes in Physics) doi: 10.1007/3-540-45532-9_8

Proceedings chapter

Identifiers

PID : unige:4482
DOI : 10.1007/3-540-45532-9_8
arXiv : cond-mat/0009445

Additional URL for this publication

https://link.springer.com/chapter/10.1007/3-540-45532-9_8

ISBN

978-3-540-42222-8

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356downloads

Creation

01/12/2009 15:27:36

First validation

01/12/2009 15:27:36

Update

14/03/2023 15:18:59

Status update

14/03/2023 15:18:59

Last indexation

29/10/2024 12:43:55

Capacitance, Charge Fluctuations and Dephasing In Coulomb Coupled Conductors

Contributors

Published in

Publisher

Collection

Publication date

Abstract

Keywords

UNIGE affiliation entities

Citation (ISO format)

Main files (1)

Identifiers

Additional URL for this publication

ISBN

Technical informations

Creation

First validation

Update

Status update

Last indexation