2019/10/25 by Ádám Butykai, K. Geirhos, Butykai, Ádám +23
Materials Science · Physics and Astronomy · #Magnetic and transport properties of perovskites and related materials #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism
paper · pdf · doi:10.48550/arxiv.1910.11523
In polar magnets, such as GaV4S8, GaV4Se8 and VOSe2O5, modulated magnetic phases namely the cycloidal and the Néel-type skyrmion lattice states were identified over extended temperature ranges, even down to zero Kelvin. Our combined small-angle neutron scattering and magnetization study shows the robustness of the Néel-type magnetic modulations also against magnetic fields up to 2 T in the polar GaMo4S8. In addition to the large upper critical field, enhanced spin-orbit coupling produces a variety of modulated phases with sub-10 nm periodicity and a peculiar distribution of the magnetic modulation vectors. Thus, our work demonstrates that non-centrosymmetric magnets with 4d and 5d electron systems are ideal candidates to host highly compressed magnetic spirals and skyrmions.