4 papers
Tight-binding and density-functional study of the Raman tensor in two-dimensional massive Dirac fermion systems
Selçuk Parlak, Abhishek Kumar, Runhan Li +2
Recently, two unusual features were theoretically predicted for the Raman response of out-of-plane phonons in magnetic two-dimensional materials hosting massive Dirac fermions. Fir…
Inherited Berry curvature of phonons in Dirac materials with time-reversal symmetry
Sayandip Ghosh, Selçuk Parlak, Ion Garate
The Berry curvature of phonons is an active subject of research in condensed matter physics. Here, we present a model in which phonons acquire a Berry curvature through their coupl…
Raman tensor for two-dimensional massive Dirac fermions
Selçuk Parlak, Ion Garate
Raman spectroscopy is a valuable characterization tool for two-dimensional materials. Starting from model Hamiltonians for Chern insulators and magnetized monolayers of transition…
Nonlinear longitudinal current of band-geometric origin in wires of finite thickness
Robin Durand, Louis-Thomas Gendron, Théo Nathaniel Dionne +1
The miniaturization of integrated circuits is facing an obstruction due to the escalating electrical resistivity of conventional copper interconnects. The underlying reason for thi…