Title Magneto-optical imaging of flux penetration into arrays of $Bi_{2}Sr_{2}CaCu_{2}O_{8}$ microdisksMagneto-optical imaging of flux penetration into arrays of $Bi_{2}Sr_{2}CaCu_{2}O_{8}$ microdisks Author Connolly, M.R. Milošević, M.V. Bending, S.J. Tamegai, T. Faculty/Department Faculty of Sciences. Physics Research group Condensed Matter Theory Publication type article Publication 2008Lancaster, Pa, 2008 Subject Physics Source (journal) Physical review : B : solid state. - Lancaster, Pa, 1970 - 1978 Volume/pages 78(2008):13, p. 132501,1-132501,4 ISSN 0556-2805 ISI 000260574200018 Carrier E Target language English (eng) Full text (Publishers DOI) Affiliation University of Antwerp Abstract We have used differential magneto-optical (MO) imaging to investigate the mixed state of superconducting Bi2Sr2CaCu2O8+ (BSCCO) microdisks fabricated on a single-crystal sample. MO difference images of the stray field distribution over a range of out-of-plane fields allow us to distinguish between flux that is penetrating the disks and that entering the underlying BSCCO platelet. We find that flux preferentially flows along linear defects into the interstitial platelet regions up to a characteristic field Hp, above which flux enters the disks. We identify this as the field of first penetration of pancake vortices over the Bean-Livingston barrier around the disks, where Hp(T) at intermediate temperatures is well described by an exponentially decaying function with a characteristic temperature T0=19 K. At a given temperature, a minority of the disks exhibit a lower penetration field and we correlate the location of these disks with the linear defects in the BSCCO crystal. Full text (open access) https://repository.uantwerpen.be/docman/irua/d500c1/0ce53456.pdf E-info http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000260574200018&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000260574200018&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000260574200018&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 Handle