TY - JOUR
T1 - Electronic states of novel donor/acceptor type of organic superconductor, (BETS)2(Cl2TCNQ)
AU - Hiraki, K.
AU - Takahashi, T.
AU - Kondo, R.
AU - Kagoshima, S.
AU - Hasegawa, T.
AU - Mochida, T.
AU - Iwasa, Y.
N1 - Funding Information:
This work was supported by the “Research for the Future” Project by Japan Society for Promotion of Science (JSPS-REFTF97P00105), and Grant-in-aid for Science Research from Ministry of Education, Science, Sports and Culture, Japan (No. 11740211).
PY - 2001/1
Y1 - 2001/1
N2 - 1H and 77Se NMR measurements have been performed to clarify the electronic properties of charge transfer complexes, (BETS)2(X2TCNQ) (X = Cl and Br). In the Cl2TCNQ complex, a Korringa-like relaxation behavior has been observed in the metallic state at ambient pressure. At 6.5 kbar, where a metal-insulator (M-I) transition is induced, a sign of anitiferromagnetic ordering was observed in the insulating state at 10 K. In the Br2TCNQ complex, we have also found that 77Se-1/T1 forms a peak around the M-I transition temperature and that NMR line is broadened in the insulating state. The nature of the insulating states of both compounds seem to be the same.
AB - 1H and 77Se NMR measurements have been performed to clarify the electronic properties of charge transfer complexes, (BETS)2(X2TCNQ) (X = Cl and Br). In the Cl2TCNQ complex, a Korringa-like relaxation behavior has been observed in the metallic state at ambient pressure. At 6.5 kbar, where a metal-insulator (M-I) transition is induced, a sign of anitiferromagnetic ordering was observed in the insulating state at 10 K. In the Br2TCNQ complex, we have also found that 77Se-1/T1 forms a peak around the M-I transition temperature and that NMR line is broadened in the insulating state. The nature of the insulating states of both compounds seem to be the same.
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U2 - 10.1016/S0022-3697(00)00175-X
DO - 10.1016/S0022-3697(00)00175-X
M3 - Article
AN - SCOPUS:0034830423
SN - 0022-3697
VL - 62
SP - 401
EP - 403
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
IS - 1-2
ER -