ESR study of Li-doped polyacenic semiconductor (PAS) materials

Kazuyoshi Tanaka, Hiroki Ago, Yukihito Matsuura, Takako Kuga, Tokio Yamabe, Shizukuni Yata, Yukinori Hato, Nobuo Ando

研究成果: ジャーナルへの寄稿学術誌査読

15 被引用数 (Scopus)

抄録

The electronic states of Li-doped polyacenic semiconductor (PAS) materials have been examined based on electron spin resonance (ESR) observations. It has been found that Li doping causes not only metallic transition but increase in the peak-to-peak linewidth (ΔHpp) of the ESR lineshape, probably due to enhancement of the spin-orbit interactions occurring in conduction electrons on the Li atoms. Increase in ΔHpp has been observed up to the C2Li stage without any sign of liberation of Li clusters. The temperature dependence of ΔHppsuggests a certain hopping process for conduction electrons to migrate onto Li atoms. The PAS samples doped beyond the C2Li stage have shown a two-phase ESR spectrum, which consists of a broader component coming from the original carbon π-radicals and a narrow spike from the liberated Li clusters.

本文言語英語
ページ(範囲)133-139
ページ数7
ジャーナルSynthetic Metals
89
2
DOI
出版ステータス出版済み - 8月 1997
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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