Transient magnetotransport through a quantum wire
Mesoscale and Nanoscale Physics
2008-07-29 v1
Abstract
We consider an ideal parabolic quantum wire in a perpendicular magnetic field. A simple Gaussian shaped scattering potential well or hill is flashed softly on and off with its maximum at , mimicking a temporary broadening or narrowing of the wire. By an extension of the Lippmann-Schwinger formalism to time-dependent scattering potentials we investigate the effects on the continuous current that is driven through the quantum wire with a vanishingly small forward bias. The Lippmann-Schwinger approach to the scattering process enables us to investigate the interplay between geometrical effects and effects caused by the magnetic field.
Cite
@article{arxiv.0710.3289,
title = {Transient magnetotransport through a quantum wire},
author = {Vidar Gudmundsson and Gunnar Thorgilsson and Chi-Shung Tang and Valeriu Moldoveanu},
journal= {arXiv preprint arXiv:0710.3289},
year = {2008}
}
Comments
RevTeX (pdf-LaTeX), 11 pages with 15 included jpg figures