Skip to main content
SpringerLink
Log in

Instability of the Critical State in NdBa2Cu3O7−δ Single Crystals

  • Published:
Journal of Low Temperature Physics Aims and scope Submit manuscript

Abstract

Instabilities of the critical state are observed in various NdBa 2 Cu 3 O 7−δ single crystals by means of direct magneto-optic (MO) imaging while warming up flux states containing vortices of opposite polarity. Using the same samples as in the MO investigations, we observe for the first time characteristic steps in the integral magnetization measured by means of a SQUID system, which allows a constant temperature sweep. The integral measurement technique enables the study of the instability phenomenon (”turbulence”) in a much wider range of temperatures and fields than the MO investigations, and also in the orientations H a ‖ c and H a ⊥ c. As a result, we find turbulence not only in a narrow window of temperatures (65 ≤ T ≤ 80 K), but also in a window of applied negative fields ranging between 30 and 80 mT.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

REFERENCES

  1. M. R. Koblischka and R. J. Wijngaarden Supercond. Sci. Technol. 8 199 (1995)

    Google Scholar 

  2. M. V. Indenbom et al. Physica C 209259 (1993);V. K. Vlasko-Vlasov et al. Phys. Rev. B 58 3446 (1998);T. H. Johansen et al. in High Temperature Super-conductors:Synthesis, Processing, and Large-Scale Applications, eds. U. Balachandran, P. J. McGinn, and J. S. Abell, (The Minerals, Metals, and Materials Society, New York, 1996) p. 203.

    Google Scholar 

  3. M. R. Koblischka et al. Europhys. Lett. 41 419 (1998)

    Google Scholar 

  4. T. Frello et al. Phys. Rev. B 59 R6639 (1999)

    Google Scholar 

  5. M. R. Koblischka Physica C 282–287 2197 (1997)

    Google Scholar 

  6. Th. Wolf et al. J. Cryst. Growth 96 1010 (1989)

    Google Scholar 

  7. Quantum Design, San Diego CA 92121, model XL.

  8. F. Bass, B. Ya. Shapiro, and M. Shvartser, Phys. Rev. Lett. 80 2441 (1998); F. Bass et al. Phys. Rev. B 58 2878 (1998).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. SRL/ISTEC, 1-16-25, Shibaura, Minato-ku, Tokyo, 105, Japan

    Michael R. Koblischka, Masato Murakami, Satoru Koishikawa, Tom Henning Johansen, Michael Baziljevich, Thomas Frello & Thomas Wolf

  2. Department of Physics, University of Oslo, N-0316, Oslo, Norway

    Tom Henning Johansen & Michael Baziljevich

  3. Condensed Matter Physics and Chemistry Department, Risø National Laboratory, DK-4000, Roskilde, Denmark

    Thomas Frello

  4. ITP, Forschungszentrum Karlsruhe, D-76021, Karlsruhe, Germany

    Thomas Wolf

Authors
  1. Michael R. Koblischka
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Masato Murakami
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Satoru Koishikawa
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Tom Henning Johansen
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Michael Baziljevich
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Thomas Frello
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. Thomas Wolf
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Koblischka, M.R., Murakami, M., Koishikawa, S. et al. Instability of the Critical State in NdBa2Cu3O7−δ Single Crystals. Journal of Low Temperature Physics 117, 1483–1487 (1999). https://doi.org/10.1023/A:1022518406132

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1022518406132

Keywords

Search

Navigation