Transport Properties of an Aharonov-Bohm Interferometer with an In-line Quantum Dot

We investigate the transport properties of a single quantum dot Aharonov-Bohm (AB) interferometer by analyzing the total current of the system in and out of the Kondo regime. We then interpolate the transport behavior of the AB interferometer in the linking regime. We show the explicit expression of the Kondo temperature as a function of the AB phase together with its dependence on other characteristics such as the linewidth of the ring, the finite Coulomb interaction and energy levels of the quantum dot. The total current as a function of AB phase and the ratio of temperature to the Kondo temperature of the system is also presented in this work. [DOI: 10.1380/ejssnt.2007.29]