Resonant macroscopic quantum tunneling in SQUID systems
Paolo Silvestrini, Berardo Ruggiero, Yuri N. Ovchinnikov
DOI 10.1103/PhysRevB.54.1246 · Physical Review B
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Abstract
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. 75, 1614 (1995)] referring to the quasistationary case, while other observable effects are predicted in the nonstationary case. © 1996 The American Physical Society.
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