Issue |
EPL
Volume 95, Number 5, September 2011
|
|
---|---|---|
Article Number | 57002 | |
Number of page(s) | 5 | |
Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
DOI | https://doi.org/10.1209/0295-5075/95/57002 | |
Published online | 10 August 2011 |
Giant magnetisation step in Fe2: Molecular nanomagnets in the weak exchange limit
1
1. Physikalisches Institut, Universität Stuttgart - Pfaffenwaldring 57, 70550 Stuttgart, Germany, EU
2
London Centre for Nanotechnology, University College London - 17-19 Gordon Street, London WC1H 0AH, UK, EU
3
CNRS, Université de Bordeaux, ICMCB - avenue du Docteur Schweitzer, 33608 Pessac Cedex, France, EU
4
1. Institut für Theoretische Physik, Universität Stuttgart - Pfaffenwaldring 57, 70550 Stuttgart, Germany, EU
5
Grenoble High Magnetic Field Laboratory, CNRS - BP 166, 38042 Grenoble Cedex 9, France, EU
6
Institut für Physikalische Chemie, Universität Stuttgart - Pfaffenwaldring 55, 70550 Stuttgart, Germany, EU
a
slageren@ipc.uni-stuttgart.de
Received:
9
May
2011
Accepted:
11
July
2011
We investigate a Fe2 molecular nanomagnet that displays a giant, field-induced step in its magnetisation curve. Detailed magnetisation and magnetic torque investigations demonstrate that in this Fe2 system the single-ion anisotropy is dominant over the isotropic exchange coupling. Accurate spin Hamiltonian parameter values and tensor orientations are obtained. The theoretical analysis reveals that this system is a very promising candidate for the direct observation of the Néel vector tunnel splitting in weakly coupled molecular nanomagnets.
PACS: 75.30.Gw – Magnetic anisotropy / 75.50.Xx – Molecular magnets / 75.45.+j – Macroscopic quantum phenomena in magnetic systems
© EPLA, 2011
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.