Title Theoretical model for the structural phase transition and the metal-insulator transition in polymerized $KC_{60}$ Author Verberck, B. Nikolaev, A.V. Michel, K.H. Faculty/Department Faculty of Sciences. Physics Publication type article Publication 2004 , 2004 Subject Physics Chemistry Engineering sciences. Technology Source (journal) Fullerenes, nanotubes, and carbon nanostructures. - Place of publication unknown Source (book) 6th Biennial International Workshop on Fullerenes and Atomic Clusters, JUN 30-JUL 04, 2003, St Petersburg, RUSSIA Volume/pages 12(2004) :1-2 , p. 243-252 ISSN 1536-383X ISI 000220551600040 Carrier E Target language English (eng) Full text (Publishers DOI) Affiliation University of Antwerp Abstract The recently discovered structural phase transition in Polymerized KC60 at about 50K leads to a doubling of the unit cell volume and is accompanied by a metal-insulator transition. Here, we show that the ((a) over right arrow + (c) over right arrow, (b) over right arrow, (a) over right arrow - (c) over right arrow) superstructure results from orientational charge density waves along the polymer chains and correlated displacements of the K+ ions. The presented model can also account for the metal-insulator transition. The effect is specific for the space group Pmnn of KC60 and is absent in both Rb- and CsC60 (space group 12/m), in agreement with the present experimental knowledge of these compounds. E-info http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000220551600040&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000220551600040&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 Handle