Transport measurements of high-Tc superconductors at megagauss magnetic fields by means of a radio frequency transmission technique

T. Sekitani, Y. H. Matsuda, S. Ikeda, K. Uchida, F. Herlach, N. Miura, K. Nakao, T. Izumi, S. Tajima, Masato Murakami, S. Hoshi, T. Koyama, Y. Shiohara

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We measured the upper critical field (B∥CuO2 plane) of optimally doped YBCO thin films (Tc~90 K) in very high magnetic fields up to 200 T generated in the single-turn coil and up to 400 T by electromagnetic flux compression. In order to overcome experimental difficulties such as high voltage induced in the measuring circuit and eddy current heating of the sample, we used a contactless radio frequency transmission technique. Clear evidence of the superconducting to normal (S-N) transition was observed for the magnetic field perpendicular to the c-axis at various temperatures. The results are consistent with our previous data obtained by means of the microwave strip-line technique. Including the data from higher fields up to 400 T, a complete magnetic phase diagram on the B-T plane has been constructed for YBCO. In addition to the S-N transition, the observed signal was found to reflect the vortex dynamics.

Original languageEnglish
Pages (from-to)116-122
Number of pages7
JournalPhysica C: Superconductivity and its Applications
Volume392-396
Issue numberPART 1
DOIs
Publication statusPublished - 2003 Oct
Externally publishedYes

Fingerprint

Superconducting materials
radio frequencies
Magnetic fields
Strip telecommunication lines
Induction heating
eddy currents
magnetic fields
Phase diagrams
high voltages
strip
Vortex flow
Compaction
coils
Microwaves
phase diagrams
vortices
electromagnetism
Fluxes
microwaves
Thin films

Keywords

  • High magnetic field
  • Magneto-transport
  • S-N transition
  • YBaCuO

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Transport measurements of high-Tc superconductors at megagauss magnetic fields by means of a radio frequency transmission technique. / Sekitani, T.; Matsuda, Y. H.; Ikeda, S.; Uchida, K.; Herlach, F.; Miura, N.; Nakao, K.; Izumi, T.; Tajima, S.; Murakami, Masato; Hoshi, S.; Koyama, T.; Shiohara, Y.

In: Physica C: Superconductivity and its Applications, Vol. 392-396, No. PART 1, 10.2003, p. 116-122.

Research output: Contribution to journalArticle

Sekitani, T, Matsuda, YH, Ikeda, S, Uchida, K, Herlach, F, Miura, N, Nakao, K, Izumi, T, Tajima, S, Murakami, M, Hoshi, S, Koyama, T & Shiohara, Y 2003, 'Transport measurements of high-Tc superconductors at megagauss magnetic fields by means of a radio frequency transmission technique', Physica C: Superconductivity and its Applications, vol. 392-396, no. PART 1, pp. 116-122. https://doi.org/10.1016/S0921-4534(03)01111-0
Sekitani, T. ; Matsuda, Y. H. ; Ikeda, S. ; Uchida, K. ; Herlach, F. ; Miura, N. ; Nakao, K. ; Izumi, T. ; Tajima, S. ; Murakami, Masato ; Hoshi, S. ; Koyama, T. ; Shiohara, Y. / Transport measurements of high-Tc superconductors at megagauss magnetic fields by means of a radio frequency transmission technique. In: Physica C: Superconductivity and its Applications. 2003 ; Vol. 392-396, No. PART 1. pp. 116-122.
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