We are interested in a variety of problems in the arena of theoretical condensed matter physics. The common thread through most of the problems we tackle is many-body effects. Our target is to understand the implications of electron-electron, electron-phonon, and electron-photon interactions on the ground-state and dynamical properties of a variety of low-dimensional quantum systems. The motivation is simple: leaving aside a few notable examples, the most interesting phases of matter, including ferromagnetism, superconductivity, and fractional quantum Hall effects, emerge in systems with a macroscopically large number of degrees of freedom in the presence of interactions. Quantum many-body problems pose severe intellectual challenges that require physical intuition, fine approximations, and sophisticated numerical approaches.

We are currently working on:

  • Plasmon lifetimes, all-electrical plasmon injection, and all-electrical plasmon detection in 2D materials
  • Hydrodynamic transport in ultra-clean solid-state crystals: from viscous flow to electronic turbulence
  • Non-linear optics and many-body effects
  • Ultrafast phenomena in 2D materials: excitons and plasmons
  • Optical properties of Weyl semimetals

Collaborations

Within IIT, our group is part of the multi-disciplinary team coordinated by the Graphene Labs and sponsored by the EC under the Graphene Flagship.

Outside of IIT, our work on optoelectronics and plasmonics of 2D materials is carried out in tight collaboration with Graphene Flagship members G. Cerullo (Italy), A.C. Ferrari (UK), A.K. Geim (UK), 

A.S. Grigorenko (UK), F. Guinea (Spain), R. Hillenbrand (Spain), M.I. Katsnelson (The Netherlands), F.H.L. Koppens (Spain), and K.S. Novoselov (UK).

In the US, we mainly collaborate with A.H. MacDonald (University of Texas at Austin) and G. Vignale (University of Missouri-Columbia). 

Our actives on hydrodynamic transport in solid-state devices and optics/plasmonics of Weyl semimetals are currently sponsored by Fondazione Istituto Italiano di Tecnologia.