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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

Abstract

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.

Keywords

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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