Ba3V2S4O3: A Mott Insulating Frustrated Quasi‐One‐Dimensional S=1 Magnet |
| |
| Authors: | Emily J Hopkins Dr Yurii Prots Dr Ulrich Burkhardt Dr Yves Watier Dr Zhiwei Hu Dr Chang‐Yang Kuo Dr Jen‐Che Chiang Dr Tun‐Wen Pi Dr Arata Tanaka Prof Liu Hao Tjeng Dr Martin Valldor |
| |
| Institution: | 1. Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, 01187 Dresden (Germany);2. ESRF, The European Synchrotron, 38000 Grenoble (France);3. National Synchrotron Radiation Research Centre, Hsinchu 30076 (Taiwan);4. Department of Quantum Matter, ADSM, Hiroshima University, Higashi‐Hiroshima 739‐8530 (Japan) |
| |
| 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 (P63, a=10.1620(2), c=5.93212(1) Å). X‐ray absorption spectroscopy, in conjunction with multiplet calculations, clearly describes the vanadium in charge‐disproportionated VIIIS6 and VVSO3 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. |
| |
| Keywords: | magnetic properties semiconductors solid‐state reactions vanadium X‐ray spectroscopy |
|
|
