Calculation of the superconducting critical temperature in doped fullerenes

H. Zheng; K.-H. Bennemann

doi:10.1103/PhysRevB.46.11993

← Back to search

Calculation of the superconducting critical temperature in doped fullerenes

H. Zheng, K.-H. Bennemann

DOI 10.1103/PhysRevB.46.11993 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

In view of experimental evidence we assume that the coupling between electrons and on-molecule phonon modes is responsible for superconductivity in doped fullerenes. Therefore, we solve the Eliashberg equations by taking properly into account that the Fermi energy is comparable to the on-molecule phonon energies. The obtained formulas for the renormalization function Z(ω) and the critical temperature Tc are different from the usual ones but reduce to them when the ratio between Fermi energy and phonon frequencies is much larger than 1. We present results for the dopant and pressure dependence of Tc which are in good agreement with experimental results.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Rb3C60 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
K3C60 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown