Quantum transport and integrability of the Anderson model for a quantum dot with multiple leads

Article

关键词: SINGLE-ELECTRON TRANSISTOR;   

DOI  :  10.1103/PhysRevB.68.125327

来源: SCIE

【 摘 要 】

We show that an Anderson Hamiltonian describing a quantum dot connected to multiple leads is integrable. A general expression for the nonlinear conductance is obtained by combining the Bethe ansatz exact solution with Landauer-Buttiker theory. In the Kondo regime, a closed form expression is given for the matrix conductance at zero temperature and when all the leads are close to the symmetric point. A bias-induced splitting of the Kondo resonance is possible for three or more leads. Specifically, for N leads, with each at a different chemical potential, there can be N-1 Kondo peaks in the conductance.

【 授权许可】

Free