Escape from a zero-current state in a one-dimensional array of Josephson junctions
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
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
voltage state, coulomb-blockade, behavior
IdentifiersURN: urn:nbn:se:kth:diva-22389DOI: 10.1103/PhysRevB.67.092507ISI: 000182019300026OAI: oai:DiVA.org:kth-22389DiVA: diva2:341087
QC 201005252010-08-102010-08-10Bibliographically approved