Enhanced Macroscopic Quantum Tunneling in Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ Intrinsic Josephson Junction Stacks

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dc.creatorJin, X. Y.
dc.creatorLisenfeld, J.
dc.creatorKoval, Y.
dc.creatorLukashenko, A.
dc.creatorUstinov, A. V.
dc.creatorMüller, P.
dc.date2006-03-16
dc.date.accessioned2026-07-07T07:04:46Z
dc.date.available2026-07-07T07:04:46Z
dc.descriptionWe have investigated macroscopic quantum tunneling in Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ intrinsic Josephson junctions at millikelvin temperatures using microwave irradiation. Measurements show that the escape rate for uniformly switching stacks of N junctions is about $N^2$ times higher than that of a single junction having the same plasma frequency. We argue that this gigantic enhancement of macroscopic quantum tunneling rate in stacks is boosted by current fluctuations which occur in the series array of junctions loaded by the impedance of the environment.
dc.description4 pages and 5 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0603445
dc.identifierhttp://arxiv.org/abs/cond-mat/0603445
dc.identifierPRL 96, 177003 (2006)
dc.identifierdoi:10.1103/PhysRevLett.96.177003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109441
dc.subjectSuperconductivity
dc.titleEnhanced Macroscopic Quantum Tunneling in Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ Intrinsic Josephson Junction Stacks
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