title: Effects of electron-electron scattering in wide ballistic microcontacts.
abstract: We calculate the corrections to the Sharvin conductance of ballistic multimode microcontacts that result from electron-electron scattering in the leads. Using a semiclassical Boltzmann equation, we obtain that these corrections are positive and scale with temperature as T(2)ln(EF/T) for three-dimensional contacts and as T for two-dimensional ones. These results are relevant to recent experiments on two-dimensional electron gas contacts.
authors.affiliation: Institute of Radioengineering and Electronics, Mokhovaya 11-7, Moscow, 125009 Russia.
authors.forename: K E
authors.initials: KE
authors.lastname: Nagaev
authors.forename: O S
authors.initials: OS
authors.lastname: Ayvazyan