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SKM 2021 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 11: Posters Magnetism III

MA 11.33: Poster

Mittwoch, 29. September 2021, 13:30–16:30, P

Magnetic Transitions in Synthetic Antlerite, Cu3SO4(OH)4 — •Darren C. Peets1, Anton A. Kulbakov1, Quirin Stahl1, Pavlo Portnichenko1, Maxim Avdeev2, Sebastian Gaß3, Laura Teresa Corredor Bohorquez3, Anja U. B. Wolter3,4, Manuel Feig5, Hagen Poddig6, Inés Puente-Orench7,8, Jochen Geck1,4, and Dmytro S. Inosov1,41IFMP, TU Dresden, 01069 Dresden, Germany — 2ANSTO, Lucas Heights, NSW 2234, Australia — 3IFW-Dresden, 01069 Dresden, Germany — 4ct.qmat, TU Dresden, 01069 Dresden, Germany — 5IEP, TU Bergakademie Freiberg, 09596 Freiberg, Germany — 6Anorganische Chemie II, TU Dresden, 01069 Dresden, Germany — 7INMA, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain — 8ILL, 38042 Grenoble, France

In frustrated magnetic systems, geometric constraints or the competition amongst interactions introduce extremely high degeneracy and prevent the system from readily selecting a low-temperature ground state. In the mineral antlerite, Cu3SO4(OH)4, Cu2+ (S=1/2) quantum spins populate triangular-lattice three-leg ladders in a novel highly-frustrated quasi-one-dimensional structural motif. We demonstrate that this mineral hosts four distinct magnetically-ordered phases in zero field alone, including an incommensurate phase and a multiple-q phase. Multiple-q phases are extremely uncommon in centrosymmetric compounds of 3d and lighter elements, and the discovery of such a phase in antlerite opens a new route to finding new materials platforms for exotic magnetic order.

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