Kondo model

The oscillations of the heat conductance as a function of the gate voltage of each quantum dot are analyzed in both Fermi liquid and non-Fermi liquid regimes. We discuss possible experimental realizations of the model to observe the signatures of the non-Fermi liquid behavior in the heat conductance measurements.

12p vispiderman 15-06-2023 3 2   Download

Recently, the influence of electron-electron interactions on the thermoelectric transport in a two-channel charge Kondo circuit has been studied in [Phys. Rev. B 105 (2022) L121405]. In this paper, we revisit the Luttinger-liquid-based model and discuss in details the limit when the spin mode is noninteracting (gσ = 1) while the interaction in the charge sector is repulsive (gρ ≤ 1).

13p vispiderman 15-06-2023 7 2   Download

The signature of the magnetic competition in a nearly filled impurity band diluted magnetic semiconductors is addressed. In the formalism of the Kondo lattice model, selfconsistent equations determining the Green function of the itinerant carrier in the system are evaluated by use of the dynamical mean-field theory.

9p vimelindagates 18-07-2022 6 2   Download

The single-orbital Anderson impurity model using graphene as the host material is considered for the case where the impurity is placed on top of a carbon atom of the graphene lattice. This is an excellent setup for the r = 1 pseudogap impurity model, where there exists a quantum phase transition from the free local moment phase to the Kondo screening phase.

12p vimelindagates 18-07-2022 6 2   Download

Investigate theoretically quantum transport through the “charge” Kondo circuit consisting of the quantum dot (QD) coupled weakly to an electrode at temperature T + ∆T and connected strongly to another electrode at the reference temperature T by a single-mode quantum point contact (QPC). To account for the effects of Coulomb interaction in the QD-QPC setup operating in the integer quantum Hall regime we describe the edge current in the quantum circuit by Luttinger model characterized by the Luttinger parameter g. I

10p 12120609 23-03-2020 18 1   Download