Fermi-surface reconstruction to a pressure-induced metal-insulator transition

J. Wosnitza, J. Hagel, O. Stockert, C. Pfleiderer, J. A. Schlueter, J. Mohtasham, G. L. Gard

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


We report on a detailed investigation of the pressure-dependent structural and electronic properties close to the pressure-induced metal-insulator transition of the quasi-two-dimensional organic superconductor β″-(BEDT-TTF)2SF5CH2CF 2SO3, where BEDT-TTF stand for bisethylenedithio- tetrathiafulvalene (or ET for short). Although the pressure-dependent hysteresis of the metal-insulator transition suggests a structural origin, no major crystallographic modifications could be detected by neutron-scattering experiments. Shubnikov-de Haas (SdH) experiments, on the other hand, show that a reconstructed band structure precedes the phase transition to the insulating state. A new SdH frequency with a rather small effective mass appears.

Original languageEnglish
Pages (from-to)277-281
Number of pages5
JournalJournal De Physique. IV : JP
StatePublished - 2004
Externally publishedYes
EventISCOM 2003: 5th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets - Port-Bourgenay, France
Duration: 21 Sep 200326 Sep 2003


  • Band structure
  • Metal-insulator transition
  • Organic superconductors


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