Electron transport through single Mn12 molecular magnets
Mesoscale and Nanoscale Physics
2009-11-11 v2
Abstract
We report transport measurements through a single-molecule magnet, the Mn12 derivative [Mn12O12(O2C-C6H4-SAc)16(H2O)4], in a single-molecule transistor geometry. Thiol groups connect the molecule to gold electrodes that are fabricated by electromigration. Striking observations are regions of complete current suppression and excitations of negative differential conductance on the energy scale of the anisotropy barrier of the molecule. Transport calculations, taking into account the high-spin ground state and magnetic excitations of the molecule, reveal a blocking mechanism of the current involving non-degenerate spin multiplets.
Cite
@article{arxiv.cond-mat/0510732,
title = {Electron transport through single Mn12 molecular magnets},
author = {H. B. Heersche and Z. de Groot and J. A. Folk and H. S. J. van der Zant and C. Romeike and M. R. Wegewijs and L. Zobbi and D. Barreca and E. Tondello and A. Cornia},
journal= {arXiv preprint arXiv:cond-mat/0510732},
year = {2009}
}
Comments
Accepted for Phys. Rev. Lett., 5 pages, 4 figures