Thermoelectric effect in the Kondo dot side-coupled to a Majorana mode

• DOI: 10.1140/epjb/e2015-60200-9

We investigate the linear thermoelectric response of an interacting quantum dot side-coupled by one of two Majorana modes hosted by a topological superconducting wire. We employ the numerical renormalization group technique to obtain the thermoelectrical conductance L in the Kondo regime while the background temperature T, the Majorana-dot coupling Γ m , and the overlap ε m between the two Majorana modes are tuned. We distinguish two transport regimes in which L displays different features: the weak- (Γ m T K ) regimes, where T K is the Kondo temperature. For an infinitely long nanowire where the Majorana modes do not overlap (ε m = 0), the thermoelectrical conductance in the weak-coupling regime exhibits a peak at T ~ Γ m