Charge susceptibility and conductances of a double quantum dot - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue AIP Advances Année : 2018

Charge susceptibility and conductances of a double quantum dot

Résumé

We calculate the charge susceptibility and the linear and differential conductances of a double quantum dot coupled to two metallic reservoirs both at equilibrium and when the system is driven away from equilibrium. This work is motivated by recent progress in the realization of solid state spin qubits. The calculations are performed by using the Keldysh nonequilibrium Green function technique. In the noninteracting case, we give the analytical expression for the electrical current and deduce from there the linear conductance as a function of the gate voltages applied to the dots, leading to a characteristic charge stability diagram. We determine the charge susceptibility which also exhibits peaks as a function of gate voltages. We show how the study can be extended to the case of an interacting quantum dot.
Fichier principal
Vignette du fichier
AIPAdvances2018DQD.pdf (1.92 Mo) Télécharger le fichier
Origine : Accord explicite pour ce dépôt
Loading...

Dates et versions

hal-01896080 , version 1 (16-10-2018)

Identifiants

Citer

V. Talbo, M. Lavagna, T.  Q. Duong, Adeline Crépieux. Charge susceptibility and conductances of a double quantum dot. AIP Advances, 2018, 8 (10), pp.101333. ⟨10.1063/1.5043108⟩. ⟨hal-01896080⟩
364 Consultations
110 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More