Journal of Superconductivity and Novel Magnetism

, Volume 29, Issue 12, pp 3075–3080 | Cite as

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

  • Mark V. Kartsovnik
  • Michael Kunz
  • Ludwig Schaidhammer
  • Florian Kollmannsberger
  • Werner Biberacher
  • Natalia D. Kushch
  • Akira Miyazaki
  • Hideki Fujiwara
Original Paper


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)2FeBr4 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.


Organic superconductors Magnetism and superconductivity Magnetic quantum oscillations 


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Mark V. Kartsovnik
    • 1
  • Michael Kunz
    • 1
    • 2
  • Ludwig Schaidhammer
    • 1
    • 2
  • Florian Kollmannsberger
    • 1
    • 2
  • Werner Biberacher
    • 1
  • Natalia D. Kushch
    • 3
  • Akira Miyazaki
    • 4
  • Hideki Fujiwara
    • 5
  1. 1.Walther-Meißner-Institut, Bayerische Akademie der WissenschaftenGarchingGermany
  2. 2.Physik-DepartmentTechnische Universität MünchenGarchingGermany
  3. 3.Institute of Problems of Chemical PhysicsChernogolovkaRussia
  4. 4.University of ToyamaToyamaJapan
  5. 5.Osaka Prefecture UniversityOsakaJapan

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