Antiferromagnetism and superconductivity of BETS conductors with Fe3+ ions

Authors
Kobayashi, H Tanaka, H Ojima, E Fujiwara, H Nakazawa, Y Otsuka, T Kobayashi, A Tokumoto, M Cassoux, P
Citation
H. Kobayashi et al., Antiferromagnetism and superconductivity of BETS conductors with Fe3+ ions, SYNTH METAL, 120(1-3), 2001, pp. 663-666
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SYNTHETIC METALS
ISSN journal
03796779 → ACNP
Volume
120
Issue
1-3
Year of publication
2001
Pages
663 - 666
Database
ISI
SICI code
0379-6779(20010315)120:1-3<663:AASOBC>2.0.ZU;2-T
Abstract
The SQUID measurements revealed an antiferromagnetic transition of kappa -B ETS2FeBr4 around 2.5 K (BETS=bis(ethylenedithio)tetraselenafulvalene). Resi stivity measurements showed an anomaly at T-N which gave a clear evidence f or the interaction between pi metal electrons and localized magnetic moment s in organic metal system for the first time. A superconducting transition was observed at 1.1 K. The specific heat indicates the coexistence of antif erromagnetism and superconductivity below T-c. Similar successive antiferro magnetic and superconducting transitions were observed in kappa -BETS2FeCl4 . A superconducting transition was observed also in lambda -BETS2FeCl4 at h igh pressure.