Mesoscopic Superconductivity
![Hall probe with Al disks on top](http://www.condmat.physics.manchester.ac.uk/images/promos/Hall_probe_small.jpg)
We developed a pioneering technique named ballistic Hall magnetometry, which allowed magnetisation measurements of individual superconductors of submicron size. This work has led to a number of surprising and counter-intuitive observations, such as giant, fractional and “negative” vortices and the paramagnetic Meissner effect.