Planar Superconductor-Ferromagnet-Superconductor Josephson Junctions as Scanning-Probe Sensors
Planar Superconductor-Ferromagnet-Superconductor Josephson Junctions as Scanning-Probe Sensors
The main challenge in scanning SQUID microscopy (the most sensitive technique for magnetometry) is the inverse proportionality between magnetic field sensitivity and spatial resolution. This work shows that a scanning-probe sensor made of a single planar superconductor/ferromagnet/superconductor Josephson junction can help to resolve this difficulty. Having a similar field sensitivity, …