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Escape from a zero-current state in a one-dimensional array of Josephson junctions
KTH, Superseded Departments, Physics.ORCID iD: 0000-0001-8534-6577
2003 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 67, no 9Article in journal (Refereed) Published
Abstract [en]

A long one-dimensional array of small Josephson junctions exhibits Coulomb blockade of Cooper pair tunneling. This zero-current state exists up to a switching voltage, V-sw, where there is a sudden onset of current. In this paper we present histograms showing how V-sw changes with temperature for a long array and calculations of the corresponding escape rates. Our analysis of the problem is based on the existence of a voltage-dependent energy barrier and we do not make any assumptions about its shape. The data divide into two temperature regimes, the higher of which can be explained with the Kramers thermal escape model. At low temperatures the escape becomes independent of temperature.

Place, publisher, year, edition, pages
2003. Vol. 67, no 9
Keyword [en]
voltage state, coulomb-blockade, behavior
URN: urn:nbn:se:kth:diva-22389DOI: 10.1103/PhysRevB.67.092507ISI: 000182019300026OAI: diva2:341087
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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