Estimation of local current transport properties in thin film superconductor based on scanning hall-probe microscopy

Kohei Higashikawa, Kei Shiohara, Masayoshi Inoue, Takanobu Kiss, Masateru Yoshizumi, Teruo Izumi

研究成果: ジャーナルへの寄稿Conference article

抄録

To enhance a global critical current in a superconductor, it is indispensable to understand current limiting factors and their influence on such a critical current. From this point of view, we have investigated in-plane distribution of local critical current density and its electric field criterion in a thin-film superconductor by using scanning-Hall probe microscopy. In a remanent state, after the application of sufficiently high magnetic field to a sample, current flows at critical current density according to the critical state model. Such distribution of current density was estimated from that of measured magnetic field using the Biot-Savart law. Furthermore, the corresponding electric field criterion was evaluated from the relaxation of such remanent magnetic field by considering Faraday's law. This means that we could estimate in-plane distribution of local critical current density as a function of electric field criterion in a nondestructive manner. This characterization method would be very helpful for finding current limiting factors in a thin-film superconductor and their influence on its global current density versus electric field properties which would usually be obtained by four-probe method.

元の言語英語
ページ(範囲)57-62
ページ数6
ジャーナルMaterials Research Society Symposium Proceedings
1434
発行部数January
DOI
出版物ステータス出版済み - 1 1 2012
イベント2012 MRS Spring Meeting - San Francisco, CA, 米国
継続期間: 4 9 20124 13 2012

Fingerprint

Transport properties
Superconducting materials
critical current
Microscopic examination
transport properties
Electric fields
current density
microscopy
Scanning
Thin films
scanning
probes
Critical currents
Magnetic fields
thin films
electric fields
Current density
magnetic fields
Biot-Savart law
estimates

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

これを引用

Estimation of local current transport properties in thin film superconductor based on scanning hall-probe microscopy. / Higashikawa, Kohei; Shiohara, Kei; Inoue, Masayoshi; Kiss, Takanobu; Yoshizumi, Masateru; Izumi, Teruo.

:: Materials Research Society Symposium Proceedings, 巻 1434, 番号 January, 01.01.2012, p. 57-62.

研究成果: ジャーナルへの寄稿Conference article

@article{92e9d097231140e9bdc5cc93b45a30b3,
title = "Estimation of local current transport properties in thin film superconductor based on scanning hall-probe microscopy",
abstract = "To enhance a global critical current in a superconductor, it is indispensable to understand current limiting factors and their influence on such a critical current. From this point of view, we have investigated in-plane distribution of local critical current density and its electric field criterion in a thin-film superconductor by using scanning-Hall probe microscopy. In a remanent state, after the application of sufficiently high magnetic field to a sample, current flows at critical current density according to the critical state model. Such distribution of current density was estimated from that of measured magnetic field using the Biot-Savart law. Furthermore, the corresponding electric field criterion was evaluated from the relaxation of such remanent magnetic field by considering Faraday's law. This means that we could estimate in-plane distribution of local critical current density as a function of electric field criterion in a nondestructive manner. This characterization method would be very helpful for finding current limiting factors in a thin-film superconductor and their influence on its global current density versus electric field properties which would usually be obtained by four-probe method.",
author = "Kohei Higashikawa and Kei Shiohara and Masayoshi Inoue and Takanobu Kiss and Masateru Yoshizumi and Teruo Izumi",
year = "2012",
month = "1",
day = "1",
doi = "10.1557/opl.2012.1587",
language = "English",
volume = "1434",
pages = "57--62",
journal = "Materials Research Society Symposium - Proceedings",
issn = "0272-9172",
publisher = "Materials Research Society",
number = "January",

}

TY - JOUR

T1 - Estimation of local current transport properties in thin film superconductor based on scanning hall-probe microscopy

AU - Higashikawa, Kohei

AU - Shiohara, Kei

AU - Inoue, Masayoshi

AU - Kiss, Takanobu

AU - Yoshizumi, Masateru

AU - Izumi, Teruo

PY - 2012/1/1

Y1 - 2012/1/1

N2 - To enhance a global critical current in a superconductor, it is indispensable to understand current limiting factors and their influence on such a critical current. From this point of view, we have investigated in-plane distribution of local critical current density and its electric field criterion in a thin-film superconductor by using scanning-Hall probe microscopy. In a remanent state, after the application of sufficiently high magnetic field to a sample, current flows at critical current density according to the critical state model. Such distribution of current density was estimated from that of measured magnetic field using the Biot-Savart law. Furthermore, the corresponding electric field criterion was evaluated from the relaxation of such remanent magnetic field by considering Faraday's law. This means that we could estimate in-plane distribution of local critical current density as a function of electric field criterion in a nondestructive manner. This characterization method would be very helpful for finding current limiting factors in a thin-film superconductor and their influence on its global current density versus electric field properties which would usually be obtained by four-probe method.

AB - To enhance a global critical current in a superconductor, it is indispensable to understand current limiting factors and their influence on such a critical current. From this point of view, we have investigated in-plane distribution of local critical current density and its electric field criterion in a thin-film superconductor by using scanning-Hall probe microscopy. In a remanent state, after the application of sufficiently high magnetic field to a sample, current flows at critical current density according to the critical state model. Such distribution of current density was estimated from that of measured magnetic field using the Biot-Savart law. Furthermore, the corresponding electric field criterion was evaluated from the relaxation of such remanent magnetic field by considering Faraday's law. This means that we could estimate in-plane distribution of local critical current density as a function of electric field criterion in a nondestructive manner. This characterization method would be very helpful for finding current limiting factors in a thin-film superconductor and their influence on its global current density versus electric field properties which would usually be obtained by four-probe method.

UR - http://www.scopus.com/inward/record.url?scp=84939147970&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84939147970&partnerID=8YFLogxK

U2 - 10.1557/opl.2012.1587

DO - 10.1557/opl.2012.1587

M3 - Conference article

VL - 1434

SP - 57

EP - 62

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

SN - 0272-9172

IS - January

ER -