Transport through a quantum dot with SU(4) Kondo entanglement
arXiv:cond-mat/0609298 · doi:10.1103/PhysRevB.75.035332
Abstract
We investigate a mesoscopic setup composed of a small electron droplet (dot) coupled to a larger quantum dot (grain) also subject to Coulomb blockade as well as two macroscopic leads used as source and drain. An exotic Kondo ground state other than the standard SU(2) Fermi liquid unambiguously emerges: an SU(4) Kondo correlated liquid. The transport properties through the small dot are analyzed for this regime, through boundary conformal field theory, and allow a clear distinction with other regimes such as a two-channel spin state or a two-channel orbital state.
13 pages, 3 figures
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- Fermi liquid theory for SU(N) Kondo model
- Ground State and Excitations of Quantum Dots with "Magnetic Impurities"
- Spin-orbital Kondo decoherence by environmental effects in capacitively coupled quantum dot devices