3 papers
cond-mat.mtrl-sci2026
Optical Response Beyond Magnetic Symmetries
Javier Sivianes, Enrique Boquete-Someso, Daniel Hernangómez-Pérez +1
The optical response of magnetic materials is conventionally classified through magnetic space groups (MSGs), where spin and lattice are locked by the relativistic spin-orbit inter…
cond-mat.mes-hall2026
Linear response of the Chern insulator MnBiTe: A Wannier function approach
Matthew Albert, Javier Sivianes, Jason G. Kattan +2
Recent work demonstrated that in the long wavelength limit the linear response of a Chern insulator to finite-frequency electric fields is the sum of two terms: A general frequency…
cond-mat.mes-hall2025
Surface-state engineering for nonlinear charge and spin photocurrent generation
Javier Sivianes, Peio Garcia-Goiricelaya, Daniel Hernangómez-Pérez +1
We systematically explore a pathway for generating nonlinear charge and spin photocurrents using spin-orbit-split surface states. This mechanism enables net charge and spin flow al…