4 citations · 7 across the 3 of their papers we have counts for
5 papers
Chirality rules for optical vortices in rhombohedral graphene multilayers
Felipe Pérez Riffo, Matías Castro Schnaidt, Juan M. Florez +1
Optical zeros are momenta where the interband dipole vanishes. The dipole phase winds around each of them by an integer, so they are vortices of the resonant optical response with…
Exact vortex decomposition of the shift current
Matias Castro Schnaidt, Felipe Perez Riffo, Juan M. Florez +1
Does any integer survive in the shift current, and does the Chern number control its sign? We show that the shift vector is a singular field on the Brillouin torus. Its curl has tw…
Symmetry selection rule for the band-edge shift current in two dimensions
Felipe Pérez Riffo, Matías Castro, Leonor Chico +2
The shift current is the intrinsic bulk photovoltaic response of a crystal without an inversion center. In graphene multilayers, calculations report large band-edge shift currents…
Slide and Twist: Manipulating Polarization in Multilayer Hexagonal Boron-Nitride
Sanber Vizcaya, Felipe Perez Riffo, Juan M. Florez +1
This study explores the world of across-layer sliding ferroelectricity in multilayer hexagonal boron nitride (hBN) and gallium nitride (hGaN), aiming to control out-of-plane polari…
Stoner ferromagnetism in low-angle twisted bilayer graphene at three-quarters filling
Kevin J. U. Vidarte, Felipe Pérez Riffo, Eric Suárez Morell +1
We present a theoretical investigation of the magnetic properties exhibited by twisted bilayer graphene (TBG) systems with small twist angles, where the appearance of flat miniband…