title: Temperature-dependent quantum electron transport in 2D point contacts.
abstract: We consider the transmission of electrons through a two-dimensional ballistic point contact in the low-conductance regime near the pinch-off region. The scattering of electrons by Friedel oscillations of charge density results in a contribution to the conductance proportional to the temperature. The sign of this linear term depends on the range of the electron-electron interaction and appears to be negative for the relevant experimental parameters.
authors.affiliation: Kotelnikov Institute for Radioengineering and Electronics, Mokhovaya 11-7, Moscow 125009, Russia. krishtop@cplire.ru
authors.forename: T V
authors.initials: TV
authors.lastname: Krishtop
authors.forename: K E
authors.initials: KE
authors.lastname: Nagaev