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

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

2006-11-22

arxiv.org/abs/cond-mat/0611573v2

Phys. Rev. B 75, 075310 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures, published version in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.75.075310

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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