What we do

Josephson Devices for spin physics

Josephson junctions are extremely sensitive to even smallest phase changes in the junction barrier. Therefore, JJs and SQUID devices offer unique platforms to study spin physics by coupling the spin-active materials and interfaces to the junction barrier. Experiments in this direction comes under the scope of "superconducting spintronics". 

Under this umbrella we are working on 

• Ways to induce long range spin triplet supercurrents in JJs 

• Detection of buried interface spin polarization using JJs 

• Metallic spin glass physics using JJs 

• Single molecule magnets using SQUIDs 

• etc..

Superconducting materials        

Superconducting materials have remained as interesting as they were at the time of discovery more than 100 years back. Many new types of superconductors have emerged since then which challenge the understanding of this phenomenon, while opening up new avenues for applications. We are currently quite interested in a superconducting system NiBi3 which forms spontaneously at the interface of Ni and Bi.  

With this material we are working on 

• Single crystal superconducting nanowires 

• Granular Josephson assemblies

• Monolithic Superconductor-ferromagnet systems