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Estimation of Local Current Transport Properties in Thin Film Superconductor Based on Scanning Hall-probe Microscopy

Published online by Cambridge University Press:  11 December 2012

Kohei Higashikawa ,
Kei Shiohara ,
Masayoshi Inoue ,
Takanobu Kiss ,
Masateru Yoshizumi  and
Teruo Izumi
Kohei Higashikawa
Affiliation:
Department of Electrical Engineering, Graduate School of ISEE, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
Kei Shiohara
Affiliation:
Department of Electrical Engineering, Graduate School of ISEE, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
Masayoshi Inoue
Affiliation:
Department of Electrical Engineering, Graduate School of ISEE, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
Takanobu Kiss
Affiliation:
Department of Electrical Engineering, Graduate School of ISEE, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
Masateru Yoshizumi
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center, 1-10-13 Shinonome, Koto-ku, Tokyo 135-0062, Japan
Teruo Izumi
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center, 1-10-13 Shinonome, Koto-ku, Tokyo 135-0062, Japan
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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.

Keywords

superconductingelectrical propertiesfilm
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1434: Symposium I – Recent Advances in Superconductors, Novel Compounds and High-Tc Materials , 2013 , mrss12-1434-i03-04
Copyright
Copyright © Materials Research Society 2012

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References

REFERENCES

Johansen, T.H., Baziljevich, M., Bratsberg, H., Galperin, Y., Lindelof, P.E., Shen, Y., Vase, P., Phys. Rev. B 54, 16264 (1996).CrossRefGoogle Scholar
Jooss, Ch., Warthmann, R., Forkl, A., Kronmüller, H., Physica C 299, 215 (1998).CrossRefGoogle Scholar
THEVA <http://www.theva.com/>..>Google Scholar
Furtner, S., Nemetschek, R., Semerad, R., Sigl, G., Prusseit, W., Supercond. Sci. Technol. 17, S281 (2004).CrossRefGoogle Scholar
Higashikawa, K., Inoue, M., Kawaguchi, T., Shiohara, K., Imamura, K., Kiss, T., Iijima, Y., Kakimoto, K., Saitoh, T., Izumi, T., Physica C 471, 1036 (2011).CrossRefGoogle Scholar
Higashikawa, K., Shiohara, K., Komaki, Y., Okumura, K., Imamura, K., Inoue, M., Kiss, T., Iijima, Y., Saitoh, T., Machi, T., Yoshizumi, M., Izumi, T., Okamoto, H., Physics Procedia in press.Google Scholar
Roth, B.J., Sepulveda, N.G., Wikswo, J.P. Jr., J. Appl. Phys. 65, 361 (1989).CrossRefGoogle Scholar
Dinner, R.B., Moler, K.A., Feldmann, D.M., Beasley, M.R., Phys. Rev. B 75, 144503 (2007).CrossRefGoogle Scholar
Kiss, T., Inoue, M., Egashira, S., Kuga, T., Ishimaru, M., Takeo, M., Matsushita, T., Iijima, Y., Kakimoto, K., Saitoh, T., Awaji, S., Watanabe, K., Shiohara, Y., IEEE Trans. Appl. Supercond. 13, 2607 (2003).CrossRefGoogle Scholar