Bernard Barbara

TL;DR: In this article, the results of low-temperature experiments on a single crystal composed of superparamagnetic manganese clusters (Mn12-ac) were reported, which clearly demonstrate the existence of quantum-mechanical tunnelling of the bulk magnetization.

TL;DR: In this article, the first magnetization measurements of individual ferromagnetic nanoparticles (15-30 nm) at very low temperatures (0.1-6 K) were presented.

TL;DR: In this article, two colloids (Coll-I and Coll-II) have been obtained by changing the organometallic concentration in the polymer and the particle size deduced from analyses of the magnetic susceptibilities and magnetization curves are consistent with those measured by high-resolution transmission electronic microscopy (HRTEM).

TL;DR: This work reports the first study of isolated nanoscale wires with diameters smaller than 100 nm, for which singledomain states could be expected, and obtained unique insight into the process of magnetization reversal by measuring histograms of the switching field as a function of the orientation of the wires in the applied field, their diameter, and the temperature.

TL;DR: The present observation of quantum oscillations suggests that low-dimension self-organized qubit networks having coherence times of the order of 100 μs (at liquid helium temperatures) are a realistic prospect.