Quantum synchronization effects in intrinsic Josephson junctions

M. Machida; T. Kano; S. Yamada; M. Okumura; T. Imamura; T. Koyama

doi:10.1016/j.physc.2007.11.081

Quantum synchronization effects in intrinsic Josephson junctions

M. Machida, T. Kano, S. Yamada, M. Okumura, T. Imamura, T. Koyama

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article

13 Citations (Scopus)

Abstract

We investigate quantum dynamics of the superconducting phase in intrinsic Josephson junctions of layered high-T_c superconductors motivated by a recent experimental observation for the switching rate enhancement in the low temperature quantum regime. We pay attention to only the capacitive coupling between neighboring junctions and perform large-scale simulations for the Schrödinger equation derived from the Hamiltonian considering the capacitive coupling alone. The simulation focuses on an issue whether the switching of a junction induces those of the other junctions or not. The results reveal that the superconducting phase dynamics show synchronous behavior with increasing the quantum character, e.g., decreasing the junction plane area and effectively the temperature. This is qualitatively consistent with the experimental result.

Original language	English
Pages (from-to)	689-694
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	468
Issue number	7-10
DOIs	https://doi.org/10.1016/j.physc.2007.11.081
Publication status	Published - 2008 Apr 1

Keywords

Intrinsic Josephson junctions
Quantum synchronization effects

ASJC Scopus subject areas

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

Access to Document

10.1016/j.physc.2007.11.081

Fingerprint Dive into the research topics of 'Quantum synchronization effects in intrinsic Josephson junctions'. Together they form a unique fingerprint.

Cite this

Machida, M., Kano, T., Yamada, S., Okumura, M., Imamura, T., & Koyama, T. (2008). Quantum synchronization effects in intrinsic Josephson junctions. Physica C: Superconductivity and its applications, 468(7-10), 689-694. https://doi.org/10.1016/j.physc.2007.11.081

@article{a5108c7c74f843afbb21b5a7b965dfa5,

title = "Quantum synchronization effects in intrinsic Josephson junctions",

abstract = "We investigate quantum dynamics of the superconducting phase in intrinsic Josephson junctions of layered high-Tc superconductors motivated by a recent experimental observation for the switching rate enhancement in the low temperature quantum regime. We pay attention to only the capacitive coupling between neighboring junctions and perform large-scale simulations for the Schr{\"o}dinger equation derived from the Hamiltonian considering the capacitive coupling alone. The simulation focuses on an issue whether the switching of a junction induces those of the other junctions or not. The results reveal that the superconducting phase dynamics show synchronous behavior with increasing the quantum character, e.g., decreasing the junction plane area and effectively the temperature. This is qualitatively consistent with the experimental result.",

keywords = "Intrinsic Josephson junctions, Quantum synchronization effects",

author = "M. Machida and T. Kano and S. Yamada and M. Okumura and T. Imamura and T. Koyama",

year = "2008",

month = apr,

day = "1",

doi = "10.1016/j.physc.2007.11.081",

language = "English",

volume = "468",

pages = "689--694",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier",

number = "7-10",

}

TY - JOUR

T1 - Quantum synchronization effects in intrinsic Josephson junctions

AU - Machida, M.

AU - Kano, T.

AU - Yamada, S.

AU - Okumura, M.

AU - Imamura, T.

AU - Koyama, T.

PY - 2008/4/1

Y1 - 2008/4/1

N2 - We investigate quantum dynamics of the superconducting phase in intrinsic Josephson junctions of layered high-Tc superconductors motivated by a recent experimental observation for the switching rate enhancement in the low temperature quantum regime. We pay attention to only the capacitive coupling between neighboring junctions and perform large-scale simulations for the Schrödinger equation derived from the Hamiltonian considering the capacitive coupling alone. The simulation focuses on an issue whether the switching of a junction induces those of the other junctions or not. The results reveal that the superconducting phase dynamics show synchronous behavior with increasing the quantum character, e.g., decreasing the junction plane area and effectively the temperature. This is qualitatively consistent with the experimental result.

AB - We investigate quantum dynamics of the superconducting phase in intrinsic Josephson junctions of layered high-Tc superconductors motivated by a recent experimental observation for the switching rate enhancement in the low temperature quantum regime. We pay attention to only the capacitive coupling between neighboring junctions and perform large-scale simulations for the Schrödinger equation derived from the Hamiltonian considering the capacitive coupling alone. The simulation focuses on an issue whether the switching of a junction induces those of the other junctions or not. The results reveal that the superconducting phase dynamics show synchronous behavior with increasing the quantum character, e.g., decreasing the junction plane area and effectively the temperature. This is qualitatively consistent with the experimental result.

KW - Intrinsic Josephson junctions

KW - Quantum synchronization effects

UR - http://www.scopus.com/inward/record.url?scp=44449096495&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=44449096495&partnerID=8YFLogxK

U2 - 10.1016/j.physc.2007.11.081

DO - 10.1016/j.physc.2007.11.081

M3 - Article

AN - SCOPUS:44449096495

VL - 468

SP - 689

EP - 694

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - 7-10

ER -