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

TY - JOUR

T1 - Scaling Of The Coulomb Energy Due To Quantum Fluctuations In The Charge Of A Quantum Dot

AU - Molenkamp, L.W.

AU - Flensberg, Karsten

AU - Kemerink, M.

PY - 1995/12/4

Y1 - 1995/12/4

N2 - 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.

AB - 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.

KW - cond-mat

U2 - 10.1103/PhysRevLett.75.4282

DO - 10.1103/PhysRevLett.75.4282

M3 - Journal article

C2 - 10059865

SN - 0031-9007

VL - 75

SP - 4282

EP - 4285

JO - Physical Review Letters

JF - Physical Review Letters

IS - 23

ER -