Fabrication and transport properties of superconducting thin films
experimental
How do we grow thin films and artificially layered S/F structures?
The samples are deposited by a 3-sources UHV magnetron sputtering system. It is equipped with a load-lock chamber and a movable substrate holder which allows to fabricate 9 different samples in a single deposition run.
(left) UHV diode sputtering system; (right)
particular of Nb deposition
The superconducting properties are investigated by transport measurements. Transport properties [R(T), R(H), I(V)] can be performed in presence of magnetic field up to 11 Tesla. A rotatable insert can be used (down to 1.8 K) in order to vary the angle between the magnetic field and the sample. Temperatures down to 300 mK can be reached in a sorption pumped 3He Heliox insert from Oxford Instruments.
(left) particular of the 3He insert; (right)
4He cryostat
see the pictures of the old labs in Baronissi...