Tunneling between 2D electron layers with correlated disorder: anomalous sensitivity to spin-orbit coupling
Abstract
Tunneling between two-dimensional electron layers with mutually correlated disorder potentials is studied theoretically. Due to this correlation, the diffusive eigenstates in different layers are almost orthogonal to each other. As a result, a peak in the tunnel I-V characteristics shifts towards small bias, V. This "protects" the peak against the interaction-induced smearing, since the relaxation rate near the Fermi level is low. If the correlation in disorder potentials is complete, the peak position and width are governed by the spin-orbit coupling in the layers; this coupling lifts the orthogonality of the eigenstates. Possibility to use inter-layer tunneling for experimental determination of weak intrinsic spin-orbit splitting of the Fermi surface is discussed.
Keywords
Cite
@article{arxiv.cond-mat/0605019,
title = {Tunneling between 2D electron layers with correlated disorder: anomalous sensitivity to spin-orbit coupling},
author = {V. A. Zyuzin and E. G. Mishchenko and M. E. Raikh},
journal= {arXiv preprint arXiv:cond-mat/0605019},
year = {2007}
}
Comments
5 pages, 5 figures; published version, minor changes