Comparative High-Energy Resolution Photoemission Study of K_xC_<60> and Cs_xC_<60>

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概要

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• Comparative high-energy resolution (ΔE〜30 meV) photoemission spectroscopy has been performed for Cs_xC_<60> and K_xC_<60> to study the difference and similarity in the electronic structure near the Fermi level (E_F) between the superconducting and the non-superconducting alkali-doped C_<60>. It was found that Cs_xC_<60> (0≤x≤6) is a semiconductor or an insulator in all the composition range except for 0<x≤1 where the Cs-doped C_<60> appears to be metallic with a finite density of states at E_F. This shows a sharp contrast with the case of K_xC_<60> which exhibits a relatively large density of states at E_F in the composition range of 0<x<4 with the largest intensity around x=3.C_<60>fullerenesuperconductorelectronic structurealkali metal

• 東北大学の論文
• 1994-03-25

著者

• Takahashi Takashi

  Department Of Applied Chemistry Graduate School Of Science And Engineering Tokyo Institute Of Techno

• Takahashi Takashi

  Department Of Physics Tohoku University

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