Magnetic field and orientation dependence of vortex motion in YBa 2 Cu 3 O 7 /PrBa 2 Cu 3 O 7 multilayers

Fusao Ichikawa, Bairu Zhao, Tetsuji Uchiyama, Ryohei Kawabata, Teruhide Koga, Takeshi Arai, Takeshi Fukami, Takafumi Aomine, Ji Jun Sun, Bo Xu, Lin Li

Research output: Contribution to journalArticle

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Abstract

We have studied the vortex motion in YBa 2 Cu 3 O 7 /PrBa 2 Cu 3 O 7 (YBCO/PBCO) multilayers by measuring the magnetic field H and orientation dependence of the average activation energy Ū. The Ū of YBCO(24 Å)/PBCO(96 Å) multilayer system shows a logarithmic H dependence in the field region of 0.1-4 T. The H direction dependence of Ū shows that all Ū versus H sin φ of experimental points fall on the same line, Ū versus H (φ = 90°), in the whole applied field and orientation regions. Here, φ is the angle between H and the film plane under the condition of H ⊥ the transport current. These results suggest two dimensional vortex motion in the YBCO(24 Å)/PBCO(96 Å) multilayers. The deviations from the logH dependence at low fields (H < 0.1 T) and high fields (H > 4 T) are observed. The deviation at low fields is discussed on the basis of the interaction between vortices. The H dependence of Ū seems to follow a power-law behaviour in the high field. This suggests a possibility of coupling between the YBCO layers.

Original languageEnglish
Pages (from-to)275-280
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume264
Issue number3-4
DOIs
Publication statusPublished - Jun 15 1996

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Multilayers
Vortex flow
vortices
Magnetic fields
magnetic fields
deviation
Activation energy
barium copper yttrium oxide
activation energy
interactions
Direction compound

All Science Journal Classification (ASJC) codes

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

Cite this

Magnetic field and orientation dependence of vortex motion in YBa 2 Cu 3 O 7 /PrBa 2 Cu 3 O 7 multilayers . / Ichikawa, Fusao; Zhao, Bairu; Uchiyama, Tetsuji; Kawabata, Ryohei; Koga, Teruhide; Arai, Takeshi; Fukami, Takeshi; Aomine, Takafumi; Sun, Ji Jun; Xu, Bo; Li, Lin.

In: Physica C: Superconductivity and its applications, Vol. 264, No. 3-4, 15.06.1996, p. 275-280.

Research output: Contribution to journalArticle

Ichikawa, F, Zhao, B, Uchiyama, T, Kawabata, R, Koga, T, Arai, T, Fukami, T, Aomine, T, Sun, JJ, Xu, B & Li, L 1996, ' Magnetic field and orientation dependence of vortex motion in YBa 2 Cu 3 O 7 /PrBa 2 Cu 3 O 7 multilayers ', Physica C: Superconductivity and its applications, vol. 264, no. 3-4, pp. 275-280. https://doi.org/10.1016/0921-4534(96)00279-1
Ichikawa, Fusao ; Zhao, Bairu ; Uchiyama, Tetsuji ; Kawabata, Ryohei ; Koga, Teruhide ; Arai, Takeshi ; Fukami, Takeshi ; Aomine, Takafumi ; Sun, Ji Jun ; Xu, Bo ; Li, Lin. / Magnetic field and orientation dependence of vortex motion in YBa 2 Cu 3 O 7 /PrBa 2 Cu 3 O 7 multilayers In: Physica C: Superconductivity and its applications. 1996 ; Vol. 264, No. 3-4. pp. 275-280.
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AU - Koga, Teruhide

AU - Arai, Takeshi

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