Evidence for collectively phase-locked Shapiro steps in stacked Nb/AlAlO x/Nb Josephson junctions

When subjected to microwave radiation, the I- V characteristics of stacked Josephson junctions should exhibit interesting new features which are absent in a single junction. Evidence for collectively phase-locked Shapiro steps and coherent phase-locking of fluxon motion to the external microwave fie...

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Bibliographic Details
Published inPhysics letters. A Vol. 211; no. 3; pp. 172 - 176
Main Authors Song, S.N., Thomas, C., Rippert, E.D., Maglic, S., Song, Y.C., Lin, S.W., Lin, C.T., Ulmer, M., Ketterson, J.B.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 1996
Subjects
Josephson junction
Shapiro step
Shapiro step
74.60.Ge
Josephson junction
74.50.+r
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Summary:When subjected to microwave radiation, the I- V characteristics of stacked Josephson junctions should exhibit interesting new features which are absent in a single junction. Evidence for collectively phase-locked Shapiro steps and coherent phase-locking of fluxon motion to the external microwave field has been found in observations on stacked Nb/AlAlO x /Nb Josephson junctions.
ISSN:0375-9601
1873-2429
DOI:10.1016/0375-9601(95)00956-6