Физика Низких Температур: Том 27, Выпуск 9-10 (Сентябрь 2001), c. 1110-1122    ( к оглавлению , назад )

Thermo-electric effects in a Luttinger liquid

I. V. Krive

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Science of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
E-mail: krive@ilt.kharkov.ua

I. A. Romanovsky

V. N. Karasin Kharkov National University, 4 Svobody Sq., Kharkov 61077, Ukraine

E. N. Bogachek, A. G. Scherbakov, and Uzi Landman

School of Physics, Georgia Institute of Technology, Atlanta, GA 30332-0430, USA

Received March 19, 2001

Аннотация

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.

PACS:
73.23.-b - Electronic transport in mesoscopic systems
71.45.Lr - Charge-density-wave systems (see also 75.30.Fv Spin-density waves)
73.61.-r - Electrical properties of specific thin films (for optical properties of thin films, see 78.20.-e and 78.66.-w; for magnetic properties of thin films, see 75.70.-i)