Title Relaxation phenomena at the metal-to-insulator transition in $La_{0.8}Sr_{0.2}MnO_{3}$ single crystals Author Dominiczak, Maguy Ruyter, Antoine Limelette, Patrice Monot-Laffez, Isabelle Giovannelli, Fabien Rossell, Marta D. Van Tendeloo, Gustaaf Faculty/Department Faculty of Sciences. Physics Publication type article Publication 2008 New York, N.Y. , 2008 Subject Physics Source (journal) Solid state communications. - New York, N.Y. Volume/pages 148(2008) :7/8 , p. 340-344 ISSN 0038-1098 ISI 000260907800020 Carrier E Target language English (eng) Full text (Publishers DOI) Affiliation University of Antwerp Abstract The time dependence of the resistance RAC of a La0.8Sr0.2MnO3 single crystal has been investigated in the vicinity of the metal-to-insulator transition temperature. We used local probe microscopy to show the existence, at room temperature, of coexisting clusters of micrometer size. Our analysis shows that relaxation effects can be described with a simple exponential contribution using a random resistor-network, based on phase separation between insulating and metallic domains. Our results clearly prove the existence of a percolation threshold over which no percolation path exists. Moreover, these results highlight the significant role of the remanent magnetization. E-info http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000260907800020&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000260907800020&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000260907800020&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 Handle