Universality of the Conductance in Quantum Dot Transport

作者：Crisan M; Grosu I; Tifrea I^*

来源：Journal of Superconductivity and Novel Magnetism, 2010, 23(7): 1401-1406.

DOI：10.1007/s10948-010-0791-z

• Quantum dot systems
• Conductance
• Universality

We revisited the scaling behavior of the transport properties of a quantum dot system described by the spin-1/2 Anderson model using analytical methods. In the low temperature limit, we show that the conductance has a universal behavior with universality between temperature and bias. We compare this result with the empirical formula used to fit the experimental data for conductance in the case of the equilibrium transport through a single channel quantum dot. In the high temperature limit, the conductance obtained from the Anderson model is compared with previous results obtained from the Kondo model. The universal behavior is present also in the high temperature limit. These results are in good agreement with the renormalization group calculations.

• 出版日期2010-10