Temperature dependence of Raman scattering in K3Ba3C60

X. H. Chen, Y. M. Xiong, Z. Sun, T. Takenobu, H. Kitagawa, Y. Iwasa

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Raman spectra at different temperatures are reported for K3Ba3C60. A systematic change of the Raman spectra with temperature is observed. The development of the linewidth and intensity for all modes with decreasing temperature is in sharp contrast to the case for pure C60. For the two lowest-frequency Hg modes, the appearance of the low-frequency components and an increase in their intensity are observed as temperature decreases. This could be related to an internal strain between the doped part of the crystal and the undoped part of the crystal, and the Jahn-Teller effect. An anomalously large upshift of 9 cm-1 between 20 K and room temperature for the pinch Ag (2) mode suggests the existence of hybridization between the CM molecules and the intercalants. The doublet of Ag(l) at low temperature could arise from the splitting of the crystal field.

本文言語English
ページ(範囲)8329-8340
ページ数12
ジャーナルJournal of Physics Condensed Matter
11
42
DOI
出版ステータスPublished - 1999 10 25
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 電子材料、光学材料、および磁性材料

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