Interplay Between Conducting and Magnetic Systems in the Antiferromagnetic Organic Superconductor κ-(BETS)2FeBr4

The mutual influence of the conduction electron system provided by organic donor layers and magnetic system localized in insulating layers of the molecular charge transfer salt κ -(BETS) 2 FeBr 4 has been studied. It is demonstrated that besides the high-field re-entrant superconducting state, the i...

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Bibliographic Details
Published inJournal of superconductivity and novel magnetism Vol. 29; no. 12; pp. 3075 - 3080
Main Authors Kartsovnik, Mark V., Kunz, Michael, Schaidhammer, Ludwig, Kollmannsberger, Florian, Biberacher, Werner, Kushch, Natalia D., Miyazaki, Akira, Fujiwara, Hideki
Format Journal Article
LanguageEnglish
Published New York Springer US 01.12.2016
Subjects
Characterization and Evaluation of Materials
Condensed Matter Physics
Magnetic Materials
Magnetism
Original Paper
Physics
Physics and Astronomy
Strongly Correlated Systems
Superconductivity
Organic superconductors
Magnetism and superconductivity
Magnetic quantum oscillations
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Summary:The mutual influence of the conduction electron system provided by organic donor layers and magnetic system localized in insulating layers of the molecular charge transfer salt κ -(BETS) 2 FeBr 4 has been studied. It is demonstrated that besides the high-field re-entrant superconducting state, the interaction between the two systems plays important role for the low-field superconductivity. The coupling of normal-state charge carriers to the magnetic system is reflected in magnetic quantum oscillations and can be evaluated based on the angle-dependent beating behavior of the oscillations. On the other hand, the conduction electrons have their impact on the magnetic system, which is revealed through the pressure-induced changes of the magnetic phase diagram of the material.
ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-016-3829-z