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Resonant x-ray diffraction from chiral electric-polarization structures
Stephen W. Lovesey, Gerrit van der Laan
Heterostructures of PbTiO/SrTiO superlattices have shown the formation of "polar vortices", in which a continuous rotation of ferroelectric polarization spontaneously forms…
Microscopic effects of Dy-doping in the topological insulator Bi2Te3
L. B. Duffy, N. -J. Steinke, J. A. Krieger +13
Magnetic doping with transition metal ions is the most widely used approach to break timereversal symmetry in a topological insulator, a prerequisite for unlocking the TIs exotic p…
U 5 crystal-field ground state of UO probed by directional dichroism in nonresonant inelastic x-ray scattering
Martin Sundermann, Gerrit van der Laan, Andrea Severing +4
Nonresonant inelastic x-ray scattering (NIXS) has been performed on single crystals of UO to study the direction dependence of higher-order-multipole scattering from the uraniu…
Observation of magnetic vortex pairs at room temperature in a planar α-Fe2O3/Co heterostructure
F. P. Chmiel, N. Waterfield Price, R. D. Johnson +8
Vortices are among the simplest topological structures, and occur whenever a flow field `whirls' around a one-dimensional core. They are ubiquitous to many branches of physics, fro…