Minimal realization of the Orbital Kondo effect in a Quantum Dot with two Leads
| dc.creator | Silvestrov, P. G. | |
| dc.creator | Imry, Y. | |
| dc.date | 2006-09-14 | |
| dc.date | 2007-04-18 | |
| dc.date.accessioned | 2026-07-07T07:56:54Z | |
| dc.date.available | 2026-07-07T07:56:54Z | |
| dc.description | We demonstrate theoretically how the Kondo effect may be observed in the transport of spinless electrons through a quantum dot. The role of conduction electron spin is played by a lead index. The Kondo effect takes place if there are two close levels in the dot populated by a single electron. For temperatures exceeding the Kondo temperature $T\gg T_K$ the conductance is maximal if the levels are exactly degenerate. However, at zero temperature the conductance is zero at the SU(2) symmetric point, but reaches the unitary limit $G = e^2/h$ for some finite value of the level splitting $Δ\eps\sim T_K$. Introducing the spin-1/2 for electrons and having two degenerate orbital levels in the dot allows to observe the SU(4) Kondo effect in a single dot coupled to two leads. | |
| dc.description | 6 pages, 2 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0609355 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0609355 | |
| dc.identifier | Phys. Rev. B 75, 115335 (2007) | |
| dc.identifier | doi:10.1103/PhysRevB.75.115335 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/127485 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Minimal realization of the Orbital Kondo effect in a Quantum Dot with two Leads | |
| dc.type | text |