SKM 2023 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 44: Frustrated Magnets II

MA 44.8: Vortrag

Donnerstag, 30. März 2023, 17:00–17:15, HSZ 403

Incommensurate and multiple-q magnetic misfit order in Cu₃SO₄(OH)₄ — •Anton Kulbakov¹, Elaheh Sadrollahi¹, Florian Rasch¹, Maxim Avdeev^2,3, Sebastian Gaß⁴, Laura Bohorquez⁴, Anja Wolter^4,5, Manuel Feig⁶, Roman Gumeniuk⁶, Hagen Poddig⁷, Markus Stötzer⁸, Jochen Litterst⁹, Ines Puente-Orench^10,11, Andrew Wildes¹¹, Eugen Weschke¹², Jochen Geck^1,5, Dmytro Inosov^1,5, and Darren Peets¹ — ¹IFMP, TU Dresden, Germany — ²ANSTO, Australia — ³USYD, Australia — ⁴IFW Dresden, Germany — ⁵ct.qmat, TU Dresden, Germany — ⁶TUBA Freiberg, Germany — ⁷ACII, TU Dresden, Germany — ⁸ACI, TU Dresden, Germany — ⁹IPKM, TU Braunschweig, Germany — ¹⁰INMA, Spain — ¹¹ILL, Grenoble, France — ¹²HZB, Berlin, Germany

In antlerite, Cu₃SO₄(OH)₄, Cu²⁺ (S = 1/2) quantum spins populate three-leg zigzag ladders in a highly frustrated quasi-one-dimensional structural motif. We demonstrate that at zero applied field, in addition to its recently reported low-temperature phase of coupled ferromagnetic and antiferromagnetic spin chains, this mineral hosts an incommensurate helical+cycloidal state, an idle-spin state, and a multiple-q phase which is the magnetic analog of misfit crystal structures. The antiferromagnetic order on the central leg is reentrant. The high tunability of the magnetism in antlerite makes it a particularly promising platform for pursuing exotic magnetic order.