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dc.contributor.authorChen, Ke
dc.contributor.authorZhuang, C. G.
dc.contributor.authorLi, Q.
dc.contributor.authorZhu, Y.
dc.contributor.authorVoyles, P. M.
dc.contributor.authorWeng, X.
dc.contributor.authorRedwing, J. M.
dc.contributor.authorSingh, R. K.
dc.contributor.authorKleinsasser, A. W.
dc.contributor.authorXi, X. X.
dc.date.accessioned2012-11-22T09:23:50Z
dc.date.available2012-11-22T09:23:50Z
dc.date.issued2010
dc.identifier.citationApplied Physics Letters 96, 042506 (2010)en
dc.identifier.urihttp://digital.library.wisc.edu/1793/63388
dc.descriptionhttp://dx.doi.org/10.1063/1.3298366en
dc.description.abstractSandwich-type MgB2 /MgO/MgB2 Josephson junctions with Au or MgB2 interconnection were fabricated using hybrid physical-chemical vapor deposited MgB2 thin films and RF-magnetron-sputtered MgO barrier. The junctions show properties similar to those in high-Jc Nb junctions with Jc up to 275 kA/cm2 at 4 K, which remains nonzero up to 40 K. Critical current modulations by applied magnetic field and constant voltage steps under microwave radiation were observed. Combined with the larger energy gaps in MgB2 than in Nb, the junctions presented here allow simple MgB2 digital circuits to work over 20 K or with a clock speed above 1 THz.en
dc.subjectJosephson junctionen
dc.subjectsuperconductivityen
dc.subjectMgB2en
dc.titleHigh-Jc MgB2 Josephson junctions with operating temperature up to 40 Ken
dc.typeArticleen


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