Floquet states and persistent-current transitions in a mesoscopic ring

Article

关键词: QUANTUM-DOT;    SCATTERING;    SINGLE;    TIME;    LOOP;   

DOI  :  10.1103/PhysRevB.66.245321

来源: SCIE

【 摘 要 】

We consider the effect of an oscillating potential on the single-particle spectrum and the time-averaged persistent current of a one-dimensional phase-coherent mesoscopic ring with a magnetic flux. We show that in a ring with an even number of spinless electrons the oscillating potential has a strong effect on the persistent current when the excited side bands are close to the eigenlevels of a pure ring. Resonant enhancement of side bands of the Floquet state generates a sign change of the persistent current.

【 授权许可】

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