We report the finding of unidirectional electronic properties, analogous to a semiconductor diode, in two-dimensional artificial permalloy honeycomb lattice of ultra-small bond, with a typical length of ~ 12 nm. The unidirectional transport behavior, characterized by the asymmetric colossal enhancement in differential conductivity at a modest current application of ~ 10-15 μA, persists to T = 300 K in honeycomb lattice of thickness ~ 6 nm. The asymmetric behavior arises without the application of magnetic field. A qualitative analysis of experimental data suggests the role of magnetic charge or monopoles in the unusual observations with strong implication for spintronics.
@article{arxiv.1701.08455,
title = {Magnetic diode at $T$ = 300 K},
author = {B. Summers and A. Dahal and P. Kampschroeder and J. Gunasekera and D. K. Singh},
journal= {arXiv preprint arXiv:1701.08455},
year = {2018}
}
Comments
The paper has been withdrawn due to incomplete crucial results