Kondo effect on adiabatic spin pumping from a quantum dot driven by a rotating magnetic field

Article

关键词: SINGLE-ELECTRON TRANSISTOR;    ANDERSON MODEL;    ALLOYS;   

DOI  :  10.1103/PhysRevB.78.155321

来源: SCIE

【 摘 要 】

The adiabatic spin pumping from an interacting quantum dot driven by a rotating magnetic field is studied using the numerical renormalization-group method. From the spin-current continuity equation, we derive a general formalism for spin pumping, which proves that the rotating field generates a time-independent spin current. Following this formalism, the numerical calculation implemented in the adiabatic regime demonstrates that spin pumping is enhanced exponentially with Coulomb interaction. This mechanism is explained in terms of the Kondo resonance under the external field.

【 授权许可】

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