Pumping charge with ac magnetic fluxes and the dynamical breakdown of Onsager symmetry

Article

关键词: QUANTUM ELECTRON PUMP;    PERSISTENT CURRENTS;    ENERGY SPACE;    RINGS;    DRIVEN;    LOOP;    LOCALIZATION;    DISSIPATION;    RESISTANCE;    SINGLE;   

DOI  :  10.1103/PhysRevB.87.115408

来源: SCIE

【 摘 要 】

We study the transport properties of setups with one and two mesoscopic rings threaded by ac magnetic fluxes of the form Phi(t) = Phi(dc) + Phi(ac) cos(Omega(0)t + delta) and connected to two different particle reservoirs. We analyze the conditions to generate a pumped dc current in the adiabatic regime. We also study the symmetry properties of the induced dc current as a function of the static component of the flux Phi(dc) with and without a dc bias voltage applied at the reservoirs. We analyze, in particular, the validity of the Onsager-Casimir relations for different configurations of the setups. DOI: 10.1103/PhysRevB.87.115408

【 授权许可】

Free