Mesoscopic fluctuations of Josephson current in high-Tc superconductor junctions

K. Sakamoto; Y. Asano; Y. Tanaka; H. Tsuchiura; J. Inoue; S. Kashiwaya

doi:10.1016/j.physc.2003.11.069

Mesoscopic fluctuations of Josephson current in high-T_c superconductor junctions

K. Sakamoto, Y. Asano, Y. Tanaka, H. Tsuchiura, J. Inoue, S. Kashiwaya

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

Abstract

The dc Josephson current and its fluctuations in superconductor/dirty normal metal/superconductor junctions are studied numerically by using the recursive Green function method, where a d-wave pairing symmetry is assumed in superconductors as it is in high-T_c materials. The Josephson current is sensitive to the orientation angle (α) between the crystalline axis of the high-T_c superconductors and the normal of the junction interface. When the orientation angle is π/4, the fluctuations of the Josephson current become larger than those with α=0 because of the zero-energy state formed at junction interfaces.

Original language	English
Pages (from-to)	221-224
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	412-414
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2003.11.069
Publication status	Published - 2004 Oct 1
Externally published	Yes

Keywords

Josephson current
Mesoscopic fluctuation
Zero-energy state

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.2003.11.069

Cite this

@article{3507ecc41a4a42cb92e164e1337307b9,

title = "Mesoscopic fluctuations of Josephson current in high-Tc superconductor junctions",

abstract = "The dc Josephson current and its fluctuations in superconductor/dirty normal metal/superconductor junctions are studied numerically by using the recursive Green function method, where a d-wave pairing symmetry is assumed in superconductors as it is in high-Tc materials. The Josephson current is sensitive to the orientation angle (α) between the crystalline axis of the high-Tc superconductors and the normal of the junction interface. When the orientation angle is π/4, the fluctuations of the Josephson current become larger than those with α=0 because of the zero-energy state formed at junction interfaces.",

keywords = "Josephson current, Mesoscopic fluctuation, Zero-energy state",

author = "K. Sakamoto and Y. Asano and Y. Tanaka and H. Tsuchiura and J. Inoue and S. Kashiwaya",

year = "2004",

month = oct,

day = "1",

doi = "10.1016/j.physc.2003.11.069",

language = "English",

volume = "412-414",

pages = "221--224",

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

issn = "0921-4534",

publisher = "Elsevier",

number = "SPEC. ISS.",

}

TY - JOUR

T1 - Mesoscopic fluctuations of Josephson current in high-Tc superconductor junctions

AU - Sakamoto, K.

AU - Asano, Y.

AU - Tanaka, Y.

AU - Tsuchiura, H.

AU - Inoue, J.

AU - Kashiwaya, S.

PY - 2004/10/1

Y1 - 2004/10/1

N2 - The dc Josephson current and its fluctuations in superconductor/dirty normal metal/superconductor junctions are studied numerically by using the recursive Green function method, where a d-wave pairing symmetry is assumed in superconductors as it is in high-Tc materials. The Josephson current is sensitive to the orientation angle (α) between the crystalline axis of the high-Tc superconductors and the normal of the junction interface. When the orientation angle is π/4, the fluctuations of the Josephson current become larger than those with α=0 because of the zero-energy state formed at junction interfaces.

AB - The dc Josephson current and its fluctuations in superconductor/dirty normal metal/superconductor junctions are studied numerically by using the recursive Green function method, where a d-wave pairing symmetry is assumed in superconductors as it is in high-Tc materials. The Josephson current is sensitive to the orientation angle (α) between the crystalline axis of the high-Tc superconductors and the normal of the junction interface. When the orientation angle is π/4, the fluctuations of the Josephson current become larger than those with α=0 because of the zero-energy state formed at junction interfaces.

KW - Josephson current

KW - Mesoscopic fluctuation

KW - Zero-energy state

UR - http://www.scopus.com/inward/record.url?scp=4644313880&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4644313880&partnerID=8YFLogxK

U2 - 10.1016/j.physc.2003.11.069

DO - 10.1016/j.physc.2003.11.069

M3 - Article

AN - SCOPUS:4644313880

VL - 412-414

SP - 221

EP - 224

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - SPEC. ISS.

ER -