Scaling Of The Coulomb Energy Due To Quantum Fluctuations In The Charge Of A Quantum Dot

Preprint

27 March 1995

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9503135

Abstract

The charging energy of a quantum dot is measured through the effect of its potential on the conductance of a second dot. This technique allows a measurement of the scaling of the dot's charging energy with the conductance of the tunnel barriers leading to the dot. We find that the charging energy scales quadratically with the reflection probability of the barriers. In a second experiment we study the transition from a single to a double-dot which exhibits a scaling behavior linear in the reflection probability. The observed power-laws agree with a recent theory.

Keywords

MEASURED THROUGH THE EFFECT
REFLECTION PROBABILITY
QUANTUM FLUCTUATIONS
CHARGING ENERGY
COULOMB ENERGY
QUANTUM DOT
ENERGY DUE
BARRIERS

All Related Versions

Version 1, 1995-03-27, ArXiv
Published version: Physical Review Letters, 75 (23), 4282.

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