Disorder in two-dimensional Josephson junctions (vol 55, pg 14499, 1997)

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An effective free energy of a two-dimensional ~i.e., large area! Josephson junction is derived, allowing for thermal fluctuations, random magnetic fields, and external currents. We show by using replica-symmetrybreaking methods that the junction has four distinct phases: disordered, Josephson ordered, a glass phase, and a coexisting Josephson order with the glass phase. Near the coexistence to glass transition at s5 12 the critical current is ;( area)2s11/2 where s is a measure of disorder. Our results may account for junction ordering at temperatures well below the critical temperature of the bulk in high-Tc trilayer junctions.
Original languageEnglish GB
Pages (from-to)656-656
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number1
StatePublished - 1 Jan 1998


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