Electronic properties of Cs2TCNQ3 crystals grown under magnetic field

N. Kuroda, T. Sugimoto, M. Hagiwara, Hasanudin, K. Ueda, T. Tada, H. Uozaki, N. Toyota, I. Mogi, K. Watanabe, M. Motokawa

Research output: Contribution to journalConference articlepeer-review

11 Citations (Scopus)

Abstract

The influence of magnetic field on the crystallization process has been examined in Cs2TCNQ3 (TCNQ=tetracyanoquinodimethane), a strongly Coulomb-correlated organic semiconductor. The crystal structure is unaffected by the magnetic field, while the electric, magnetic and optical properties change markedly if the magnetic field higher than a threshold (~4T) is applied during the crystal growth. The high-field crystals exhibit a very weak but distinct spontaneous magnetization with the exceedingly high Curie temperature of ~420K. The infrared and visible spectroscopy data show that this novel ferromagnetism concurs with the renormalization of the π* state of TCNQ radical anions, TCNQ-.

Original languageEnglish
Pages (from-to)535-537
Number of pages3
JournalSynthetic Metals
Volume133-134
DOIs
Publication statusPublished - 2003 Mar 13
EventISCOM 2001 - Rusutsu, Hokkaido, Japan
Duration: 2001 Sep 102001 Sep 14

Keywords

  • Infrared and visible spectroscopy
  • Magnetic field-induced acceptors
  • Organic ferromagnetism
  • TCNQ salt

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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