Mechanism of superconductivity in K_3C_(60)
Guanhua Chen, William A. Goddard III
1993Proc. Natl. Acad. Sci. U.S.A., 90(4), 1350-1353
Abstract
Using electronic states and phonon states from the first-principles calculations and including both conventional electron-phonon charge coupling and Jahn-Teller coupling, we predict T_c and other superconducting properties. The only adjustable parameter in the theory is the screening length, R_(sc). Using R_(sc) = 0.8-1.0 Å, we find excellent agreement with experiment for T_c (16-18 K), pressure dependence of T_c (ΔT_c = -6 to -10 K for 1 GPa), and ^(12)C to ^(13)C isotope shift (ɑ_C = 0.2); experimental values: 19 K, -7 K, and 0.3, respectively.
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Cite this publication
Chen, G. & III, W. A. G. (1993). Mechanism of superconductivity in K_3C_(60). *Proc. Natl. Acad. Sci. U.S.A.*, *90*(4), 1350-1353.