Magnetic of microwave complex conductivities in antiferromagnetic insulating of λ-(BEDT-TSF)2FeCl4

H. Matsui, T. Suzuki, E. Negishi, N. Toyota

Research output: Contribution to journalConference articlepeer-review


Microwave conductivities and dielectric constants along the c axis at 44.5 GHz in a π-d correlated metal λ-(BEDT-TSF)2FeCl4 have been measured by a cavity perturbation technique as a function of temperature and magnetic field. In the anomalous metallic states at 8.3 K(= TMI) < T < 70 K(= TFM), the microwave conductivity is much lower than the dc conductivity, while the dielectric constant is enhanced to the order of 103, taking a broad maximum around 30 K. From the results of IH-NMR and recent X-ray diffraction measurements, it is expected that dielectric domains or stripes might emerge heterogeneously in the metallic background. Drastic changes have been observed in the microwave response below TMI which shifts to lower temperatures by external magnetic fields. The anomalous metallic state is found to recover in the reentrant metallic states under magnetic fields higher than the critical field for the reentrant transition.

Original languageEnglish
Pages (from-to)233-237
Number of pages5
JournalJournal De Physique. IV : JP
Publication statusPublished - 2004
EventISCOM 2003: 5th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets - Port-Bourgenay, France
Duration: 2003 Sept 212003 Sept 26


  • Complex conductivity
  • Dielectric constant
  • Microwave
  • λ.-(BEDT-TSF) FeCl


Dive into the research topics of 'Magnetic of microwave complex conductivities in antiferromagnetic insulating of λ-(BEDT-TSF)2FeCl4'. Together they form a unique fingerprint.

Cite this