1996/09/07 by Ken'ichi Takano, Takano, Ken'ichi, K. Sano +1
Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #cond-mat
paper · pdf · doi:10.48550/arxiv.cond-mat/9609073
11 pages, latex format, 3 figures available on request from [email protected] (please write your postal address; figures will be sent by conventional mail)
arxiv created 1996/09/07 · arxiv updated 2009/11/30
Magnetic susceptibility measured for CaV4O9 is analyzed by a method with high temperature expansion. The analysis is consistent with the g-value which is close to 2 and is observed by an ESR experiment. Four exchange parameters in a two-dimensional Heisenberg model are determined to represent CaV4O9. All the exchange parameters are about 500 K and strongly frustrated. The observed spin gap originates from the frustration.