Magnetic structure of the quantum magnet SrCuTe₂O₆

SrCuTe₂O₆ consists of a three-dimensional arrangement of spin-1/2 Cu²⁺ ions. The first-, second-, and third-neighbor interactions, respectively, couple Cu²⁺ moments into a network of isolated triangles, a highly frustrated hyperkagome lattice consisting of corner-sharing triangles and antiferromagnetic chains. Of these, the chain interaction dominates in SrCuTe2O₆2O₆ using muon relaxation spectroscopy and neutron diffraction and present the low-temperature magnetic structure as well as the directional-dependent magnetic phase diagram as a function of field.