Electron tunneling through a double quantum-dot molecule, in the Kondo regime, under the effect of a magnetic field and an applied voltage, is studied. This system possesses a complex response to the applied fields characterized by a tristable solution for the conductance. The different nature of th
Transport in quantum dots in the Kondo regime under the influence of an AC potential
✍ Scribed by Rosa López; Ramón Aguado; Gloria Platero; Carlos Tejedor
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 91 KB
- Volume
- 12
- Category
- Article
- ISSN
- 1386-9477
No coin nor oath required. For personal study only.
✦ Synopsis
We present a fully non-equilibrium calculation of transport properties of a quantum dot in the Kondo regime when an AC potential is applied to the gate voltage. The AC signal induces decoherence in the Kondo state. As a consequence, the obtained linear conductance and time-averaged density of states of the quantum dot evolve in a non-trivial way as a function of the frequency and intensity of the harmonic modulation.
📜 SIMILAR VOLUMES
In a quasi-2D model of a quantum dot in a magnetic field, which includes the effects of spin, we consider what happens to the two-particle spectrum when a cosine perturbation along the x and y axes is added to a fundamentally parabolic confinement potential. Such a corrugation in the potential may a