title: Limiting current density in a crossed-field nanogap.
abstract: Using a mean-field theory, we have studied the quantum extension on the limiting current density in a crossed-field nanogap. When the gap spacing is less than the electron wavelength, our results show that the limiting current density is increased by a large factor from the classical values due to the effects of electron tunneling. The effects of the external magnetic field diminish with a decrease of gap spacing. Smooth transition from the classical regime to the quantum regime is demonstrated.
authors.affiliation: Applied Physics Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: L K
authors.initials: LK
authors.lastname: Ang
authors.forename: T J
authors.initials: TJ
authors.lastname: Kwan
authors.forename: Y Y
authors.initials: YY
authors.lastname: Lau