Modulated spin helicity stabilized by incommensurate orbital density waves in a quadruple perovskite manganite
(2016)
Ab Initio Cycloidal and Chiral Magnetoelectric Responses in Cr$_{2}$O$_{3}$
(2016)
Coherent magneto-elastic domains in multiferroic BiFeO3 films
(2015)
Theory of Electromagnons in CuO.
Physical review letters 114:19 (2015) 197201
Abstract:
We develop a theory of electromagnons in CuO by combining a symmetry analysis based on irreducible corepresentations, ab initio calculations, and simulations of spin dynamics using a model Hamiltonian and the Landau-Lifshitz-Gilbert equation. We show that the electromagnon measured in [Jones et al., Nat. Commun. 5, 3787 (2014)] with the electric field along the [101] direction originates from a magnetoelectric coupling mediated by Dzyaloshinskii-Moriya interactions and consists of a rigid rotation of the Cu spins around the axis defined by the electric field. Furthermore we predict the existence of a second electromagnon originating from exchange striction and coupled to electric fields along the [010] direction in the AF2 phase.Non-ferroelectric nature of the conductance hysteresis in CH3NH3PbI3 perovskite-based photovoltaic devices
Applied Physics Letters AIP Publishing 106:17 (2015) 173502