Collective macroscopic tunneling in intrinsic Josephson junctions

Masahiko Machida; Tomio Koyama

doi:10.1016/j.physc.2007.03.352

Collective macroscopic tunneling in intrinsic Josephson junctions

Masahiko Machida, Tomio Koyama

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article › peer-review

Abstract

A theory for photon-assisted macroscopic quantum tunneling (MQT) in a stack of capacitively-coupled intrinsic Josephson junctions is proposed. The theory predicts how the quantized energy-levels in the N-junction stacked system distribute. Furthermore, the theory reveals that the MQT escape rate from the single-plasmon states to the uniform voltage ones under microwave irradiation is proportional to the square of the junction number (N²). This result is consistent with the recent observation in Bi-2212 intrinsic Josephson junctions.

Original language	English
Pages (from-to)	289-292
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	460-462 I
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2007.03.352
Publication status	Published - 2007 Sep 1

Keywords

Intrinsic Josephson junction
Macroscopic quantum tunneling
Microwave assisted tunneling

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/j.physc.2007.03.352

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abstract = "A theory for photon-assisted macroscopic quantum tunneling (MQT) in a stack of capacitively-coupled intrinsic Josephson junctions is proposed. The theory predicts how the quantized energy-levels in the N-junction stacked system distribute. Furthermore, the theory reveals that the MQT escape rate from the single-plasmon states to the uniform voltage ones under microwave irradiation is proportional to the square of the junction number (N2). This result is consistent with the recent observation in Bi-2212 intrinsic Josephson junctions.",

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AB - A theory for photon-assisted macroscopic quantum tunneling (MQT) in a stack of capacitively-coupled intrinsic Josephson junctions is proposed. The theory predicts how the quantized energy-levels in the N-junction stacked system distribute. Furthermore, the theory reveals that the MQT escape rate from the single-plasmon states to the uniform voltage ones under microwave irradiation is proportional to the square of the junction number (N2). This result is consistent with the recent observation in Bi-2212 intrinsic Josephson junctions.

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KW - Macroscopic quantum tunneling

KW - Microwave assisted tunneling

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Collective macroscopic tunneling in intrinsic Josephson junctions

Abstract

Keywords

ASJC Scopus subject areas

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