Electron-Phonon Vertex Corrections and Superconductivity in
Alkali-Metal-Doped C<suB>60</suB> Solids

Chin. Phys. Lett.

1994, Vol. 11

Issue (4): 242-245 DOI:

Original Articles

Electron-Phonon Vertex Corrections and Superconductivity in Alkali-Metal-Doped C₆₀ Solids

XU Tiefeng^*;CHEN Feng;YAN Dadong;LI Wenzhu (Wenzhou Li)

Department of Physics, Zhejiang University, Hangzhou 310027 ^*Permanent Address: Ningbo University, Ningbo 315211

Cite this article:

XU Tiefeng, CHEN Feng, YAN Dadong et al 1994 Chin. Phys. Lett. 11 242-245

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Abstract The narrow conduction band of C₆₀ leads to the breakdown of the Migdal theorem and the McMillan formula is no longer applicable. In this letter, the second-order electron-phonon vertex correction is considered to explain the superconductivity in doped C₆₀ solids and the transition temperature T_c thus obtained is in accordance with the experimental results.

Keywords: 74.20.-z 71.28.+d 71.38.+i 74.70.Ya

Published: 01 April 1994

PACS:	74.20.-z	(Theories and models of superconducting state)
	71.28.+d	(Narrow-band systems; intermediate-valence solids)
	71.38.+i
	74.70.Ya

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1994/V11/I4/0242

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	YAN Dadong
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