We study the nonlocal spin transport in a lateral spin valve with multiple ferromagnetic (FM) electrodes. When two current-injecting and two spin current-detecting electrodes are all ferromagnetic, the number of possible nonlocal spin signal states is four at maximum. In reality, this number is reduced, depending on the inter-probe distance and the relative magnitudes of the spin resistances. Our theoretical results are in agreement with recent experiments of spin injection into an Al island, a carbon nanotube, and graphene.
@article{arxiv.0811.3138,
title = {Nonlocal Spin Transport in Lateral Spin Valves with Multiple Ferromagnetic Electrodes},
author = {Tae-Suk Kim and Hyun-Woo Lee and B. C. Lee},
journal= {arXiv preprint arXiv:0811.3138},
year = {2015}
}