Conductance Quantization and Magnetoresistance in Magnetic Point Contacts
Mesoscale and Nanoscale Physics
2009-10-31 v2
Abstract
We theoretically study the electron transport through a magnetic point contact (PC) with special attention to the effect of an atomic scale domain wall (DW). The spin precession of a conduction electron is forbidden in such an atomic scale DW and the sequence of quantized conductances depends on the relative orientation of magnetizations between left and right electrodes. The magnetoresistance is strongly enhanced for the narrow PC and oscillates with the conductance.
Keywords
Cite
@article{arxiv.cond-mat/9906406,
title = {Conductance Quantization and Magnetoresistance in Magnetic Point Contacts},
author = {Hiroshi Imamura and Nobuhiko Kobayashi and Saburo Takahashi and Sadamichi Maekawa},
journal= {arXiv preprint arXiv:cond-mat/9906406},
year = {2009}
}
Comments
4 pages, 4 figures, revised version with new figures