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Determination of Exchange Parameters for CaV_4O_9 | | Ken’ichi Takano
; K. Sano
; | | Date: |
7 Sep 1996 | | Subject: | cond-mat | | Abstract: | Magnetic susceptibility measured for CaV$_4$O$_9$ 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 CaV$_4$O$_9$. All the exchange parameters are about 500 K and strongly frustrated. The observed spin gap originates from the frustration. | | Source: | arXiv, cond-mat/9609073 | | Services: | Forum | Review | PDF | Favorites | |
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