Regular and singular Fermi liquid in triple quantum dots: Coherent transport studies
arXiv:1511.01235 · doi:10.1016/j.physe.2015.10.002
Abstract
A system of three coupled quantum dots in a triangular geometry (TQD) with electron-electron interaction and symmetrically coupled to two leads is analyzed with respect to the electron transport by means of the numerical renormalization group. Varying gate potentials this system exhibits extremely rich range of regimes with different many-electron states with various local spin orderings. It is demonstrated how the Luttinger phase changes in a controlled manner which then via the Friedel sum rule formula exactly reproduces the conductance through the TQD system. The analysis of the uncoupled TQD molecule from the leads gives a reliable qualitative understanding of various relevant regimes and gives an insight into the phase diagram with the regular Fermi liquid and singular-Fermi liquid phases.
10 pages, 9 figures
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Cited by in corpus (4)
- Fermi Liquids and the Luttinger Integral
- Magnetic Kondo regimes in a frustrated half-filled trimer
- Local magnetic moments and electronic transport in closed loop quantum dot systems: a case of quadruple quantum dot ring at and away from equilibrium
- Antisymmetric Spin-Orbit Coupling Effect on Kondo-Induced Electric Polarization in a Triangular Triple Quantum Dot