title: Nonlinear response of a clean one-dimensional wire.
abstract: We study nonlinear transport in a clean one-dimensional wire fabricated by cleaved edge overgrowth in molecular beam epitaxy. At low electron densities, and with a large applied bias, we observe a feature in the differential conductance similar to the so-called "0.7 structure," found in quantum point contact devices. Using a simple model we suggest a link between this phenomenon, charge neutrality, and unidirectional dynamics in the wire.
authors.affiliation: Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974, USA.
authors.forename: R
authors.initials: R
authors.lastname: de Picciotto
authors.forename: L N
authors.initials: LN
authors.lastname: Pfeiffer
authors.forename: K W
authors.initials: KW
authors.lastname: Baldwin
authors.forename: K W
authors.initials: KW
authors.lastname: West