Magnetic phase transitions and spin density distribution in the molecular multiferroic system ${\rm GaV}_4{\rm S}_8$

Rebecca L. Dally ,1 William D. Ratcliff II,1,2 Lunyong Zhang ,3,4 Heung-Sik Kim,5,6 Markus Bleuel,1,2 J. W. Kim,6,7 Kristjan Haule,6 David Vanderbilt ,6 Sang-Wook Cheong,3,6,7 and Jeffrey W. Lynn 1 1NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, USA 2Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, USA 3Laboratory for Pohang Emergent Materials, Pohang Accelerator Laboratory and Max Plank POSTECH Center for Complex Phase Materials, Pohang University of Science and Technology, Pohang 790-784, Korea 4School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China 5Department of Physics, Kangwon National University, Chuncheon 24341, Republic of Korea 6Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA 7Rutgers Center for Emergent Materials, Rutgers University, Piscataway, New Jersey 08854, USA