Fig. 4: Continuum magnetic theory explaining the trajectory of the spiral deflection.
From: Deterministic control of nanomagnetic spiral trajectories using an electric field
a Series of rocked SANS patterns showing the evolution of the magnetic states from the helical ground state into a field-polarised state at 0.1 T, passing through an intermediate regime with coexisting tilted conical and conical states. b Theoretical calculations and experimental data for the TC polar angle as a function of the applied magnetic field. The TC deflection angle is simulated for a range of different fiel offsets from the [001]-direction. c Curves illustrating the dependence of the magnetoelectric response on the saturation polarisation, λC. A linear trend in the simulated TC trajectory is consistently observed around the refined value. d 3D reciprocal space difference map between the theoretical population of two states subjected to external fields of 0 and 2.5 × 106 V/m, respectively. Errors correspond to the diagonalised covariance matrix obtained in the fitting procedure.
