Research paperTheoreticalComputational MultiscaleOther ComputationalRole of ultrafast electron-optical-phonon interactions in high harmonic generation from grapheneAdam Herling, Ofer NeufeldarXiv·2026·arXiv:2604.23294AbstractHigh harmonic generation (HHG) in graphene is studied using a theoretical formalism that includes thermally populated optical phonons in a static-lattice picture. The work shows that optical phonons strongly suppress HHG yields above about 3 eV by phase scrambling of interband currents, introduce weak temperature dependence, and produce an effective dephasing time of about 5.7 fs. The results also explain the limited experimental observation of harmonics above roughly 3.1 eV in graphene and show that phonons smooth ellipticity-dependent HHG curves.Read more
Graphene monolayer modeled with a second-order nearest-neighbor tight-binding Hamiltonian and thermally populated optical phonon-induced static lattice distortions.2 propertiesSimulated Supercell DftCStudied MaterialExpand
Research paperTheoreticalComputational MultiscaleOther ComputationalRole of ultrafast electron-optical-phonon interactions in high harmonic generation from grapheneAdam Herling, Ofer NeufeldarXiv·2026·arXiv:2604.23294AbstractHigh harmonic generation (HHG) in graphene is studied using a theoretical formalism that includes thermally populated optical phonons in a static-lattice picture. The work shows that optical phonons strongly suppress HHG yields above about 3 eV by phase scrambling of interband currents, introduce weak temperature dependence, and produce an effective dephasing time of about 5.7 fs. The results also explain the limited experimental observation of harmonics above roughly 3.1 eV in graphene and show that phonons smooth ellipticity-dependent HHG curves.Read more
Graphene monolayer modeled with a second-order nearest-neighbor tight-binding Hamiltonian and thermally populated optical phonon-induced static lattice distortions.2 propertiesSimulated Supercell DftCStudied MaterialExpand
Research paperTheoreticalComputational MultiscaleOther ComputationalRole of ultrafast electron-optical-phonon interactions in high harmonic generation from grapheneAdam Herling, Ofer NeufeldarXiv·2026·arXiv:2604.23294AbstractHigh harmonic generation (HHG) in graphene is studied using a theoretical formalism that includes thermally populated optical phonons in a static-lattice picture. The work shows that optical phonons strongly suppress HHG yields above about 3 eV by phase scrambling of interband currents, introduce weak temperature dependence, and produce an effective dephasing time of about 5.7 fs. The results also explain the limited experimental observation of harmonics above roughly 3.1 eV in graphene and show that phonons smooth ellipticity-dependent HHG curves.Read more
Graphene monolayer modeled with a second-order nearest-neighbor tight-binding Hamiltonian and thermally populated optical phonon-induced static lattice distortions.2 propertiesSimulated Supercell DftCStudied MaterialExpand
Research paperTheoreticalComputational MultiscaleOther ComputationalRole of ultrafast electron-optical-phonon interactions in high harmonic generation from grapheneAdam Herling, Ofer NeufeldarXiv·2026·arXiv:2604.23294AbstractHigh harmonic generation (HHG) in graphene is studied using a theoretical formalism that includes thermally populated optical phonons in a static-lattice picture. The work shows that optical phonons strongly suppress HHG yields above about 3 eV by phase scrambling of interband currents, introduce weak temperature dependence, and produce an effective dephasing time of about 5.7 fs. The results also explain the limited experimental observation of harmonics above roughly 3.1 eV in graphene and show that phonons smooth ellipticity-dependent HHG curves.Read more
Graphene monolayer modeled with a second-order nearest-neighbor tight-binding Hamiltonian and thermally populated optical phonon-induced static lattice distortions.2 propertiesSimulated Supercell DftCStudied MaterialExpand