We study nonlocal vortex transport in mesoscopic amorphous Nb0.7Ge0.3 samples. A dc current I is passed through a wire connected via a perpendicular channel, of a length L= 2-5 um, with a pair of voltage probes where a nonlocal response Vnl ~ I is measured. The maximum of Rnl=Vnl/I for a given temperature occurs at an L-independent magnetic field and is proportional to 1/L. The results are interpreted in terms of the dissipative vortex motion along the channel driven by a remote current, and can be understood in terms of a simple model.
Cite
@article{arxiv.cond-mat/0606449,
title = {Nonlocal vortex motion in mesoscopic amorphous Nb0.7Ge0.3 structures},
author = {A. Helzel and I. Kokanovic and D. Babic and L. V. Litvin and F. Rohlfing and F. Otto and C. Surgers and C. Strunk},
journal= {arXiv preprint arXiv:cond-mat/0606449},
year = {2009}
}