Resonant macroscopic quantum tunneling in SQUID systems

Journal Article · Mon Jul 01 00:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.1246· OSTI ID:285963

Silvestrini, P; Ruggiero, B; Ovchinnikov, Y N ^[1]

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1. Istituto di Cibernetica del C.N.R., I-80072, Arco Felice, Napoli (Italy)

A detailed theoretical analysis of the resonant macroscopic quantum tunneling in superconducting quantum interference device systems is presented. Our approach allows us to include the effect of both temperature and sweeping rate of the external flux, and to study the phenomenon both in quasistationary and nonstationary conditions, which can be induced by a fast sweep of the external bias. Moreover we compare our theory with the experimental data of Rouse, Han, and Lukens [Phys. Rev. Lett. {bold 75}, 1614 (1995)] referring to the quasistationary case, while other observable effects are predicted in the nonstationary case. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 285963
• Journal Information: Physical Review, B: Condensed Matter, Vol. 54, Issue 2; Other Information: PBD: Jul 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
SQUID DEVICES
TUNNEL EFFECT
MAGNETIC PROPERTIES
ORDER PARAMETERS
FLUCTUATIONS
RESONANCE SCATTERING
TEMPERATURE DEPENDENCE