Abstract
A series of single crystals was synthesized, allowing a comprehensive phase diagram with respect to field, temperature, and chemical substitution to be established. Our neutron diffraction experiments revealed a helimagnetic order with magnetic moments ferromagnetically aligned in the plane and a helimagnetic wave vector of for . The combination of neutron diffraction and angle-resolved photoemission spectroscopy measurements shows that the tuning of a flat band with orbital character drives the helimagnetism and indicates the possibility of a quantum order-by-disorder mechanism.
5 More- Received 7 May 2019
- Revised 3 August 2019
DOI:https://doi.org/10.1103/PhysRevB.100.094446
©2019 American Physical Society