Hi, I am Lukas and I belong to Condensed Matter Theory group. I am interested in studying the physical properties of two-dimensional (2D) materials, such as graphene. It was recently known that stacking a few layers of 2D materials like a Lego, and twisting them like an Oreo, allow the realization of several new physics, for example, superconductivity in bilayer graphene twisted at the so-called magic angle. With the presence of single-layer materials beyond graphene and even more ways to manipulate the materials, the study of 2D materials offers promising potential for the search of exotic phenomena in physics.

Currently, the theme of my research is about phonons in 2D materials with moiré pattern. While recent studies are mostly focused on the electronic aspect of the 2D materials, their phononic counterparts have also been shown to be renormalized by the formation of twisted bilayer structures. Phonons, i.e., collective vibrations of atoms in the crystal lattice, are generally the main heat carriers in most materials. Therefore, understanding phonon properties are crucial to investigate thermal transport properties or thermal energy conversion. Additionally, phonons could also interact with electron either direct (e-ph) or indirect (ph-mediated e-e) to influence the electronic transport properties.

In my research, I mainly use analytical and numerical methods to calculate physical observables of a given system in interest. During my participation in this program, I hope that I can add more tools to my arsenal and broaden my views beyond material research.