SQUID and magneto-optic investigations of flux turbulence

Michael Rudolf Koblischka, T. H. Johansen, M. Baziljevich, Masato Murakami, Th Wolf

Research output: Contribution to journalArticle

Abstract

Instabilities of the critical state ("turbulence") are observed in various high-Tc single crystals by means of magneto-optic (MO) imaging. Using the same samples as in the MO investigations, we observe for the first time characteristic steps in the magnetic moment measured by means of a SQUID system, which allows a continuous temperature sweep. A direct correlation between the steps and the MO images is established. Using this SQUID measurements, a much wider range of field and temperature can be covered. As a result, we find turbulence not only in a narrow temperature window, but also in a field window ranging between 0 and 80 mT. Furthermore, we present tests for turbulence in several different high-Tc samples.

Original languageEnglish
Pages (from-to)1275-1276
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume341-348
Issue numberPART 3
Publication statusPublished - 2000
Externally publishedYes

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Magnetooptical effects
SQUIDs
magneto-optics
Turbulence
turbulence
Fluxes
Magnetic moments
Temperature
temperature
magnetic moments
Single crystals
Imaging techniques
single crystals

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

SQUID and magneto-optic investigations of flux turbulence. / Koblischka, Michael Rudolf; Johansen, T. H.; Baziljevich, M.; Murakami, Masato; Wolf, Th.

In: Physica C: Superconductivity and its Applications, Vol. 341-348, No. PART 3, 2000, p. 1275-1276.

Research output: Contribution to journalArticle

Koblischka, MR, Johansen, TH, Baziljevich, M, Murakami, M & Wolf, T 2000, 'SQUID and magneto-optic investigations of flux turbulence', Physica C: Superconductivity and its Applications, vol. 341-348, no. PART 3, pp. 1275-1276.
Koblischka, Michael Rudolf ; Johansen, T. H. ; Baziljevich, M. ; Murakami, Masato ; Wolf, Th. / SQUID and magneto-optic investigations of flux turbulence. In: Physica C: Superconductivity and its Applications. 2000 ; Vol. 341-348, No. PART 3. pp. 1275-1276.
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