Research

I am interested in the electronic, optical and transport properties of two-dimensional atomic crystals, a new class of atomically thin materials. Most of my work focuses on graphene, a single layer of carbon atoms arranged in regular hexagons and the first of the atomic crystals isolated experimentally, and its heterostructures with other materials (for example, transition metal dichalcogenides). My main achievements to date are (number in square brackets refer to my relevant publications as listed in the "Publications" tab):

  • Explanation of the relationship between the symmetry of the electron wave function and angular anisotropy of the angle-resolved photoemission spectra (ARPES) in graphene systems [1];
  • Prediction of the electronic contribution to the Raman spectrum of bilayer graphene (later confirmed experimentally) [5];
  • Prediction of the possibility to create and annihilate Dirac points in the low-energy electronic spectrum of bilayer graphene using strain [6];
  • Observation of a nematic phase of the electron liquid in bilayer graphene at half-filling (collaboration with experimentalists) [8];
  • Construction of a symmetry-based phenomenological model for graphene electrons in graphene/hBN heterostructure [10];
  • The first definite observation of Hofstadter’s butterfly-like fractal electronic spectrum of electrons in a two-dimensional system in periodic potential and strong magnetic field (collaboration with experimentalists) [11];
  • The first prediction of the signatures of strain-induced pseudo-magnetic Landau levels in electron transport through graphene flakes [12];
  • Construction of a symmetry-based phenomenological model for graphene electrons in graphene on a substrate with unit cell almost 3 times larger than that of graphene (like In2Te2) [13];
  • Explanation of the anomalous sequence of quantum Hall states observed in bilayer graphene due to the presence of a Lifshitz transition in the electronic spectrum (collaboration with experimentalists) [17].