Electron-phonon interaction in C-70

Article

关键词: SUPERCONDUCTIVITY;    C-60;    FULLERENES;    VIBRATIONS;    CARBON;    KXC70;   

DOI  :  10.1103/PhysRevB.61.7775

来源: SCIE

【 摘 要 】

The matrix elements of the deformation potential of C-70 are calculated by means of a simple, yet accurate solution of the electron-phonon coupling problem in fullerenes, based on a parametrization of the ground-state electronic density of the system in terms of sp(2+x) hybridized orbitals. The value of the calculated dimensionless total electron-phonon coupling constant is lambda approximate to 0.1, an order of magnitude smaller than in C-60, consistent with the lack of a superconducting phase transition in C(70)A(3) fullerite, and in overall agreement with measurements of the broadening of Raman peaks in C70K4 We also calculate the photoemission cross section of C-70(-) which is found to display less structure than that associated with C-60(-), in overall agreement with the experimental findings.

【 授权许可】

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