title: Shot noise with interaction effects in single-walled carbon nanotubes.
abstract: We have measured shot noise in single-walled carbon nanotubes with good contacts at 4.2 K at low frequencies (f=600-850 MHz). We find a strong modulation of shot noise over the Fabry-Perot pattern; in terms of the differential Fano factor the variation ranges over 0.4-1.2. The shot noise variation, in combination with differential conductance, is analyzed using two (spin-degenerate) modes with different, energy-dependent transmission coefficients. Deviations from the predictions from Landauer-Buttiker formalism are assigned to electron-electron interactions.
authors.affiliation: Low Temperature Laboratory, Helsinki University of Technology, P.O. Box 2200, 02015 HUT, Espoo, Finland.
authors.forename: F
authors.initials: F
authors.lastname: Wu
authors.forename: P
authors.initials: P
authors.lastname: Queipo
authors.forename: A
authors.initials: A
authors.lastname: Nasibulin
authors.forename: T
authors.initials: T
authors.lastname: Tsuneta
authors.forename: T H
authors.initials: TH
authors.lastname: Wang
authors.forename: E
authors.initials: E
authors.lastname: Kauppinen
authors.forename: P J
authors.initials: PJ
authors.lastname: Hakonen