EB coupling in individual Co clusters

Bistable Coupling States Measured on Single Co Nanoclusters Deposited on CoO(111).
D. Le Roy, R. Morel, S. Pouget, A. Brenac, L. Notin, T. Crozes, and W. Wernsdorfer
Phys. Rev. Lett. 107, 057204 (2011)

Switching curves at 40 mK for one single nanocluster, after three successive coolings. The
dashed line is the easy axis direction and the dot indicates the bias field. Also shown is the CoO[10-1]direction.