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Article: Electron-phonon interactions and superconductivity in K3C60

TitleElectron-phonon interactions and superconductivity in K3C60
Authors
Issue Date1993
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B, 1993, v. 48 n. 18, p. 13959-13970 How to Cite?
AbstractUsing electronic states and phonon states from first-principles calculations on K3C60 to evaluate the quantities in the McMillan equation, we examine the effects of both electron-phonon dynamic charge coupling (Q) and Jahn-Teller coupling (JT) on various superconducting properties, including Tc, ΔTc (the shift of Tc for 1 GPa pressure), αC (the isotope exponent for →1312C), and αK (the isotope exponent for →4139K). All quantities including electron-phonon coupling are evaluated (without modification) directly from theory, except for the screening length between conducting electrons and ions, Rsc. With Rsc=0.8-1.0, we find that the calculated properties, Tc, ΔTc, and αC, are all in good agreement with experimental measurements. We find that the superconducting properties depend critically upon the synergy between Q and JT coupling. © 1993 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/167817
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, Gen_US
dc.contributor.authorGuo, Yen_US
dc.contributor.authorKarasawa, Nen_US
dc.contributor.authorGoddard Iii, WAen_US
dc.date.accessioned2012-10-08T03:11:57Z-
dc.date.available2012-10-08T03:11:57Z-
dc.date.issued1993en_US
dc.identifier.citationPhysical Review B, 1993, v. 48 n. 18, p. 13959-13970en_US
dc.identifier.issn0163-1829en_US
dc.identifier.urihttp://hdl.handle.net/10722/167817-
dc.description.abstractUsing electronic states and phonon states from first-principles calculations on K3C60 to evaluate the quantities in the McMillan equation, we examine the effects of both electron-phonon dynamic charge coupling (Q) and Jahn-Teller coupling (JT) on various superconducting properties, including Tc, ΔTc (the shift of Tc for 1 GPa pressure), αC (the isotope exponent for →1312C), and αK (the isotope exponent for →4139K). All quantities including electron-phonon coupling are evaluated (without modification) directly from theory, except for the screening length between conducting electrons and ions, Rsc. With Rsc=0.8-1.0, we find that the calculated properties, Tc, ΔTc, and αC, are all in good agreement with experimental measurements. We find that the superconducting properties depend critically upon the synergy between Q and JT coupling. © 1993 The American Physical Society.en_US
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_US
dc.relation.ispartofPhysical Review Ben_US
dc.titleElectron-phonon interactions and superconductivity in K3C60en_US
dc.typeArticleen_US
dc.identifier.emailChen, G:ghc@yangtze.hku.hken_US
dc.identifier.authorityChen, G=rp00671en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1103/PhysRevB.48.13959en_US
dc.identifier.scopuseid_2-s2.0-0041504033en_US
dc.identifier.volume48en_US
dc.identifier.issue18en_US
dc.identifier.spage13959en_US
dc.identifier.epage13970en_US
dc.identifier.isiWOS:A1993MF90300086-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridChen, G=35253368600en_US
dc.identifier.scopusauthoridGuo, Y=7406310425en_US
dc.identifier.scopusauthoridKarasawa, N=7005757832en_US
dc.identifier.scopusauthoridGoddard III, WA=36042196400en_US

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