Geometric frustration and Dzyaloshinskii-Moriya interactions in a quantum star lattice hybrid copper sulfateRemoveHajime Ishikawa, Yuto Ishii, Takeshi Yajima, Yasuhiro H. Matsuda, Koichi Kindo, Yusei Shimizu, Ioannis Rousochatzakis, Ulrich K. Rößler, and Oleg JansonPhys. Rev. B 109, L180401 (2024)