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Ba3V2S4O3: A Mott Insulating Frustrated Quasi-One-Dimensional S=1 Magnet

MPS-Authors
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Hopkins,  Emily Jane
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Prots,  Yurii
Yuri Prots, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Burkhardt,  Ulrich
Ulrich Burkhardt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Hu,  Zhiwei
Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Kuo,  Chang-Yang
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Chiang,  Jen-Che
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Tjeng,  Liu Hao
Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Valldor,  Martin
Martin Valldor, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Hopkins, E. J., Prots, Y., Burkhardt, U., Watier, Y., Hu, Z., Kuo, C.-Y., et al. (2015). Ba3V2S4O3: A Mott Insulating Frustrated Quasi-One-Dimensional S=1 Magnet. Chemistry – A European Journal, 21(21), 7938-7943. doi:10.1002/chem.201406511.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0027-7E02-8
Abstract
Through a solid-state reaction, a practically phase pure powder of Ba3V2S4O3 was obtained. The crystal structure was confirmed by X-ray single-crystal and synchrotron X-ray powder diffraction (P6(3), a=10.1620(2), c=5.93212(1)angstrom). X-ray absorption spectroscopy, in conjunction with multiplet calculations, clearly describes the vanadium in charge-disproportionated (VS6)-S-III and (VSO3)-S-V coordinations. The compound is shown to be a strongly correlated Mott insulator, which contradicts previous predictions. Magnetic and specific heat measurements suggest dominant antiferromagnetic spin interactions concomitant with a weak residual ferromagnetic component, and that intrinsic geometric frustration prevents long-range order from evolving.