Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-11-04
Phys. Rev. B 75, 195341 (2007)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
8 pages, 8 figures, version as published
Scientific paper
10.1103/PhysRevB.75.195341
Transport and non-equilibrium magnetization in monolayers of magnetic molecules subject to a bias voltage are considered. We apply a master-equation approach going beyond the sequential-tunneling approximation to study the Coulomb-blockade regime. While the current is very small in this case, the magnetization shows changes of the order of the saturation magnetization for small variations of the bias voltage. Inelastic cotunneling processes manifest themselves as differential-conductance steps, which are accompanied by much larger changes in the magnetization. In addition, the magnetization in the Coulomb-blockade regime exhibits strong signatures of sequential tunneling processes de-exciting molecular states populated by inelastic cotunneling. We also consider the case of a single molecule, finding that cotunneling processes lead to the occurrence of magnetic sidebands below the Coulomb-blockade threshold. In the context of molecular electronics, we study how additional spin relaxation suppresses the fine structure in transport and magnetization.
Elste Florian
Timm Carsten
No associations
LandOfFree
Cotunneling and non-equilibrium magnetization in magnetic molecular monolayers does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Cotunneling and non-equilibrium magnetization in magnetic molecular monolayers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cotunneling and non-equilibrium magnetization in magnetic molecular monolayers will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-76043