Enhanced Macroscopic Quantum Tunneling in Bi2Sr2CaCu2O8 Intrinsic Josephson Junction Stacks

Jin X, Lisenfeld J, Koval Y, Lukashenko O, Ustinov A, Müller P (2006)


Publication Language: English

Publication Type: Journal article, Letter

Publication year: 2006

Journal

Publisher: American Physical Society

Book Volume: 96

Pages Range: 177003

URI: http://www.fluxongroup.physik.uni-erlangen.de/publications/2006/JinPRL2006.pdf

DOI: 10.1103/PhysRevLett.96.177003

Abstract

We have investigated macroscopic quantum tunneling in Bi2Sr2CaCu2O8+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 N2 times higher than that of a single junction having the same plasma frequency. We argue that this gigantic enhancement of the 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. © 2006 The American Physical Society.

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How to cite

APA:

Jin, X., Lisenfeld, J., Koval, Y., Lukashenko, O., Ustinov, A., & Müller, P. (2006). Enhanced Macroscopic Quantum Tunneling in Bi2Sr2CaCu2O8 Intrinsic Josephson Junction Stacks. Physical Review Letters, 96, 177003. https://dx.doi.org/10.1103/PhysRevLett.96.177003

MLA:

Jin, X.Y., et al. "Enhanced Macroscopic Quantum Tunneling in Bi2Sr2CaCu2O8 Intrinsic Josephson Junction Stacks." Physical Review Letters 96 (2006): 177003.

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