Charge Order and Negative Thermal Expansion in V2OPO4 Pachoud, Elise ; Cumby, James ; Lithgow, Calum T. ; Attfield, J. Paul Abstract Publication: Journal of the American Chemical Society Pub Date: January 2018 DOI: 10.1021/jacs.7b09441 Bibcode: 2018JAChS.140..636P