Research

Quantum Materials

Can topology help with electronic switching?

We study how topological indices control and constrain electron transport across heterointerfaces, leading to unconventional switching in quantum materials such as mono and bilayer graphene, topological insulators, Dirac and Weyl semi-metals, and skyrmions in thin magnets

Nanomagnetism

Can we build the ultimate non-volatile memory?

We encode non-volatile memory in ultrasmall solitonic excitations in magnets, driven by spin-orbit torque. We study suitable materials (e.g. Heusler alloys) for better magnetic properties, interesting dynamics like self-focusing, and applications like temporal nano-magnetic memory. 

Beyond CMOS Logic

Can we beat the Boltzmann limit? Can we compute like a brain?

TunnelFETs, NEMFETs and Klein tunnelFETs beat the Boltzmann switching limit if we control higher order processes. Stochastic neurons excel in analog, brain-inspired temporal processing like Kalman filtering and stochastic computing. 

Photodetectors

What are the physical limits of single photon sensing?

We study the materials physics for Mid-Wave IR detectors based on Pb salts and HCT, and III-V digital superlattice avalanche photodiodes. In particular, we show how inserting minigaps through material engineering can improve their gain-bandwidth product.

Energy Management

Can we build a perfect thermal glue?

We study the physics of thermal impedance matching across rough interfaces, and how an antireflection coating can be effective in 3-D in presence of diffusive and incoherent scattering.