Linear and nonlinear transport of quantum wires is investigated at a magnetic field where spin-split one-dimensional (1D) subbands are equidistant in energy. In this seldom-studied regime, experiments are consistent with a density-dependent energy gap between spin subbands, and with a complete spin polarization of the first 1D subband under a large source-drain bias at zero field.
@article{arxiv.0903.2538,
title = {Kondo physics versus spin gap physics in fully spin-split quantum wires},
author = {F. Sfigakis and C. J. B. Ford and M. Pepper and D. A. Ritchie and I. Farrer and M. Y. Simmons and D. Maude},
journal= {arXiv preprint arXiv:0903.2538},
year = {2009}
}
Comments
just over 6 pages, 6 figures; minor revision: removed topic spin incoherence