Excitations of the highly-frustrated centred-pyrochlore lattice magnet Mn(ta)2
The centred pyrochlore lattice is extremely highly frustrated lattice, and we have recently shown that it has a spin liquid phase even more degenerate than the canonical pyrochlore and kagome lattices when considering nearest and next nearest neighbour Heisenberg interactions . It also also is described by an emergent Coulomb gauge field theory coupled to gauge charges, that can be seen as a "three-dimensional slab" of a four-dimensional structure. We have recently uncovered the first example of a material that realises this model: the metal-organic framework Mn(II) triazolate (Mn(ta)2). Mn(ta)2 is highly frustrated (T_CW/Tc ~ 50, Tc = 430 mK) and bulk property measurements suggest this material will have a spin liquid phase around 1-2K before ordering into its ground state. We therefore propose to carry out the first neutron spectroscopy study of this lattice: determining the spin Hamiltonian parameters from the ground state spin waves and measuring the spin liquid excitations to compare with our extensive theory.
The data is currently only available to download if you are a member of the proposal team.
The recommended format for citing this dataset in a research publication is in the following format:
Matthew J. Cliffe; DAVIER Naimo; JAUBERT Ludovic; E. Kermarrec; KUSHWAHA Rinku; LEMANSKI Kuba; LEON-ALCAIDE Luis; OLLIVIER Jacques; SU Xiaoxuan and TSIRLIN Alexander. (2025). Excitations of the highly-frustrated centred-pyrochlore lattice magnet Mn(ta)2. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-05-917
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