Possible stripe phases in the multiple magnetization plateaus in TbB4 from single-crystal neutron diffraction under pulsed high magnetic fields

We present a single-crystal neutron diffraction study on the Shastry-Sutherland lattice system ${\mathrm{TbB}}₄$ at zero magnetic field and under pulsed high magnetic fields up to 35 T applied along the crystallographic $c$ axis. While our results confirm the magnetic structures at zero field as well as those at the half- and full-magnetization plateaus, they offer insight into the $2/9$- and $1/3$-magnetization plateaus observed in this system. A stripe model of polarized 4-spin plaquettes whose stripe density proportionally increases with the macroscopic magnetization is in full agreement with the neutron diffraction data. Equally well-suited alternative models exist which explain the observed Bragg peaks being inherently limited in a pulsed high magnetic field experiment. We discuss the different intensity distributions in $Q$ space which can be used to distinguish these models in future experiments.