In polar magnets, such as GaV4S8, GaV4Se8 and VOSe2O5, modulated magnetic phases namely the cycloidal and the N\'eel-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 N\'eel-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.
@article{arxiv.1910.11523,
title = {Squeezing N\'eel-type Magnetic Modulations by Enhanced Dzyaloshinskii-Moriya interaction of $4d$ Electrons},
author = {Ádám Butykai and Korbinian Geirhos and Dávid Szaller and László F. Kiss and László Balogh and Maria Azhar and Markus Garst and Lisa DeBeer-Schmitt and Takeshi Waki and Yoshikazu Tabata and Hiroyuki Nakamura and István Kézsmárki and Sándor Bordács},
journal= {arXiv preprint arXiv:1910.11523},
year = {2021}
}