Electron transport through single Mn12 molecular magnets

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 complet...

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Published in:Physical review letters 2006-05, Vol.96 (20), p.206801-206801
Main Authors: Heersche, H B, de Groot, Z, Folk, J A, van der Zant, H S J, Romeike, C, Wegewijs, M R, Zobbi, L, Barreca, D, Tondello, E, Cornia, A
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container_issue 20
container_start_page 206801
container_title Physical review letters
container_volume 96
creator Heersche, H B
de Groot, Z
Folk, J A
van der Zant, H S J
Romeike, C
Wegewijs, M R
Zobbi, L
Barreca, D
Tondello, E
Cornia, A
description 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 nondegenerate spin multiplets.
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title Electron transport through single Mn12 molecular magnets
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