Controlling inelastic cotunneling through an interacting quantum dot by a circularly-polarized field

Bing Dong; X. L. Lei

doi:10.1103/physrevb.75.075310

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Controlling inelastic cotunneling through an interacting quantum dot by a circularly-polarized field

Bing Dong·X. L. Lei

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Abstract

We study inelastic cotunneling through a strong Coulomb-blockaded quantum dot subject to a static magnetic field and a perpendicular circularly-polarized magnetic field using a quantum Langevin equation approach. Our calculation predicts an interesting controllable cotunneling current characteristic, splitting--zero-anomaly--splitting transition of the differential conductance with increasing the driving frequency, ascribing to the role of {\em photon-assisted spin-flip} cotunneling processes.

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Bing Dong, X. L. Lei. 2007-01-05. Controlling inelastic cotunneling through an interacting quantum dot by a circularly-polarized field. https://doi.org/10.1103/physrevb.75.075310

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