34 citations · 145 across the 17 of their papers we have counts for
4 papers · 1 filter
Detection of phonon helicity in nonchiral crystals with Raman scattering
Selçuk Parlak, Sayandip Ghosh, Ion Garate
Recently, it has been predicted that the Berry curvature of electrons can produce an angular momentum for phonons. In systems with time-reversal symmetry, the direction of the phon…
Plasmon-magnon interactions in two-dimensional honeycomb magnets
Sayandip Ghosh, Guido Menichetti, Mikhail I. Katsnelson +1
Two-dimensional honeycomb ferromagnets offer the unprecedented opportunity to study interactions between collective modes that in standard bulk ferromagnets do not cross paths. Ind…
Dynamical density and spin response of Fermi arcs and their consequences for Weyl semimetals
Sayandip Ghosh, Carsten Timm
Weyl semimetals exhibit exotic Fermi-arc surface states, which strongly affect their electromagnetic properties. We derive analytical expressions for all components of the composit…
Charge-spin response and collective excitations in Weyl semimetals
Sayandip Ghosh, Carsten Timm
Weyl semimetals are characterized by unconventional electromagnetic response. We present analytical expressions for all components of the frequency- and wave-vector-dependent charg…