Kondo screening cloud effects in mesoscopic devices

Article

关键词: SINGLE-ELECTRON TRANSISTOR;    QUANTUM-DOT;    PERSISTENT CURRENTS;    MAGNETIC IMPURITY;    COULOMB-BLOCKADE;    RING;   

DOI  :  10.1103/PhysRevB.68.115304

来源: SCIE

【 摘 要 】

We study how finite-size effects may appear when a quantum dot in the Kondo Coulomb blockade regime is embedded into a mesoscopic device with finite wires. These finite-size effects appear when the size of the mesoscopic device containing the quantum dot is of the order of the size of a Kondo cloud and affect all thermodynamic and transport properties of the Kondo quantum dot. We also generalize our results to the experimentally relevant case where the wires contain several transverse modes/channels. Our results are based on perturbation theory, Fermi liquid theory, and slave boson mean-field theory.

【 授权许可】

Free