Similar to the recently discovered organic conductor κ-(BETS)2FeBr4 exhibiting a transition from an antiferromagnetic metal phase to a superconducting phase at 1.0 K, κ-(BETS)2GaBr4 shows a super-conducting transition around 0.5–1.0 K, indicating TC of κ-(BETS)2MBr4 (M = Fe, Ga) to be almost independent of the existence of magnetic anions; from these findings a way to develop novel organic conduct-ors with controlled antiferromagnetic interactions is suggested.
A new κ-type organic superconductor based on BETS molecules, κ-(BETS)2GaBr4 [BETS = bis(ethylenedithio)tetraselenafulvalene]
H. Tanaka, E. Ojima, H. Fujiwara, Y. Nakazawa, H. Kobayashi and A. Kobayashi, J. Mater. Chem., 2000, 10, 245 DOI: 10.1039/A908789C
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