Parasitic pumping currents in an interacting quantum dot

Article

关键词: ELECTRON PUMP;    TRANSPORT;    QUANTIZATION;   

DOI  :  10.1103/PhysRevB.82.165321

来源: SCIE

【 摘 要 】

We analyze the charge and spin pumping in an interacting dot within the almost adiabatic limit. By using a nonequilibrium Green's-function technique within the time-dependent slave-boson approximation, we analyze the pumped current in terms of the dynamical constraints in the infinite-U regime. The results show the presence of parasitic pumping currents due to the additional phases of the constraints. The behavior of the pumped current through the quantum dot is illustrated in the spin insensitive and in the spin-sensitive case relevant for spintronics applications.

【 授权许可】

Free