Abstract
We report an unexpected magnetic-field-driven magnetic structure in the -electron Shastry-Sutherland system . This phase develops at low temperatures from a noncollinear antiferromagnetic ground state above the critical field of 25.8 T applied along the axis. All U moments have a net magnetic moment in the direction of the applied field, described by a ferromagnetic propagation vector and an antiferromagnetic component described by a propagation vector due to a modulation in the direction perpendicular to the applied field. We conclude that this surprising noncollinear magnetic structure is due to a competition between the single-ion anisotropy trying to keep moments, similar to the ground state, along the [110]-type directions, Dzyaloshinskii-Moryia interaction forcing them to be perpendicular to each other and application of the external magnetic field attempting to align them along the field direction.
- Received 5 November 2019
- Revised 18 December 2019
- Accepted 8 January 2020
DOI:https://doi.org/10.1103/PhysRevResearch.2.013137
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Published by the American Physical Society