Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
Doi
Abstract
Thermoelectric effects in a Luttinger liquid (LL) wire
adiabatically connected to the leads of noninteracting electrons are considered. For a
multichannel LL a staircase-like behavior of the thermal conductance as a function of
chemical potential is found. A thermopower for a LL wire with an impurity is evaluated for
two cases: (i) LL constriction and (ii) infinite LL wire. We show that the thermopower is
described a Mott-like formula renormalized by an interaction-dependent factor. For an
infinite LL the renormalization factor decreases with increase of the interaction. However,
for a realistic situation, when a LL wire is connected to the leads of noninteracting
electrons (LL constriction), the repulsive electron-electron interaction enhances the
thermopower. A nonlinear Peltier effect in a LL is briefly discussed
