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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology



Thursday, 13 July 2006
(at 15:15 in room Phy 5.0.21)
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Electron transport through single Mn12 molecular magnets

Maarten R. Wegewijs

Institut für Theoretische Physik A
RWTH Aachen
   






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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Invited by M. Grifoni (CMT seminar and Journal Club 52 568)

last modified: 2018.10.24 Mi
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