Single-electron conductance oscillations of small open quantum dot

Z.D Kvon,O Estibals,A.Y Plotnikov,J.C Portal,A.I Toropov,J.L Gauffier

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES（2002）

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Abstract

We study the conductance of three-lead small open quantum dots fabricated on the basis of a high mobility two-dimensional (2D) electron gas in an AlGaAs/GaAs heterostructure. Large conductance oscillations have been observed, It is shown that the gate voltage period of these oscillations cot-responds to a change of the average dot charge by one electron. We suggest that they are the manifestation of spin-charge separation in small open quantum dots. (C) 2002 Elsevier Science B.V. All rights reserved.

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Key words

spin,charge,quantum dot,GaAs/AlGaAs

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