PhD & Postdoc

Santi Bhattacharya

Quantum Materials · Tata Institute of Fundamental Research

Santi Bhattacharya is a PhD candidate in Quantum Materials at the Tata Institute of Fundamental Research, supervised by Prof. Vijay Singh. His thesis investigates thickness-dependent Mott insulator-to-metal transitions in nickelate oxide thin films grown by molecular beam epitaxy, characterising transport, optical conductivity and X-ray absorption spectra under strain and gate-tunable carrier density for quantum sensing applications. Eleven publications in Physical Review Letters, npj Quantum Materials and ACS Nano document his film growth and spectroscopic characterisation work. Santi was awarded a DST-INSPIRE Fellowship and completed a beamtime experiment at the European Synchrotron Radiation Facility in Grenoble. He has received a research scientist offer from IBM Research India to develop correlated oxide materials for neuromorphic and quantum sensing devices. His nickelate films exhibit reversible metal-insulator transitions with a 10,000-fold resistivity change.

Thesis Topic

Mott insulator transitions in nickelate oxide thin films for quantum sensing applications

Transition Signals