Phase slips in submicrometer YBaCu3O7 -δ bridges

P Mikhenko, X Deng, S Gildert, Mark Colclough, Robert Smith, Christopher Muirhead, Philip Prewett, Jason Teng

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27 Citations (Scopus)


We have measured the resistance vs temperature, R(T), and current vs voltage, I(V), for a series of submicrometer YBa2Cu3O7-delta tracks. We find that superconductivity is suppressed when the room temperature resistance is greater than the superconducting resistance quantum, R-q=h/4e(2). In addition, we observe regular steps in the I(V) characteristics of some bridges, which we associate with phase slip centers. For one bridge, with resistance just below the resistance quantum, R-q, we find a gradual entry into the superconducting state which is well fit by theoretical predictions for thermally activated phase slips in a superconducting wire.
Original languageEnglish
Article number174506
Number of pages5
JournalPhysical Review B
Issue number17
Publication statusPublished - 1 Nov 2005


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