We theoretically investigate the Kondo effect in a quantum dot embedded in an Aharonov-Bohm (AB) ring. We obtain an analytical expression for the Kondo temperature TK as a function of the AB phase ø for the magnetic flux penetrating the ring, by the scaling method. We also examine the decoherence due to the inelastic process in the quantum dot embedded in an AB ring. Solving the scattering problem, we obtain the elastic part of the conductance. The inelastic part of the conductance Ginel is obtained by the subtraction of elastic part from the total conductance. We show that Ginel = 0 at T = 0 and becomes significant when T ≥ TK. We also show that the inelastic part of the conductance depends on the magnetic flux.
|Journal of Physics: Conference Series
|Published - 2012
|26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China
Duration: 2011 Aug 10 → 2011 Aug 17
ASJC Scopus subject areas
- General Physics and Astronomy