Breakdown of the field-induced superconductivity by dynamical spin reversal

Yugo Oshima, Hiroyuki Nojiri, Shinya Uji, James S. Brooks, Takahisa Tokumoto, Heng Bo Cui, Reizo Kato, Akiko Kobayashi, Hayao Kobayashi

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The quasi-two-dimensional molecular conductor λ-(BETS) 2FeCl 4, where BETS is bis(ethylenedithio) tetraselenafulvalene, shows a superconductivity in the high magnetic field environment. This is due to the compensation effect between the external field and the internal field created by the Fe3 + magnetic moment. Here, we report the simultaneous transport and electron spin resonance (ESR) measurements in the field-induced superconducting state down to 1.65K. We find that the field-induced superconductivity is partially destroyed by ESR transitions, namely, by dynamical spin reversals of Fe3 +. Moreover, it is found from our ESR results that the field-induced superconducting state is inhomogeneous, coexisting with the residual paramagnetic metal state.

Original languageEnglish
Article number024525
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number2
Publication statusPublished - 2012 Jul 27

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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