SQUID and magneto-optic investigations of flux turbulence

M. R. Koblischka; T. H. Johansen; M. Baziljevich; M. Murakami; Th Wolf

doi:10.1016/S0921-4534(00)00885-6

SQUID and magneto-optic investigations of flux turbulence

M. R. Koblischka, T. H. Johansen, M. Baziljevich, M. Murakami, Th Wolf

Research output: Contribution to journal › Article › peer-review

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-T_c samples.

Original language	English
Pages (from-to)	1275-1276
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	341-348
Issue number	PART 3
DOIs	https://doi.org/10.1016/S0921-4534(00)00885-6
Publication status	Published - 2000
Externally published	Yes

ASJC Scopus subject areas

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

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10.1016/S0921-4534(00)00885-6

Cite this

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title = "SQUID and magneto-optic investigations of flux turbulence",

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.",

author = "Koblischka, {M. R.} and Johansen, {T. H.} and M. Baziljevich and M. Murakami and Th Wolf",

note = "Funding Information: This work is partially supported by the Danish Technical Research Council and the Research Council of Norway; MRK acknowledges support from STA during the stay at SRL/ISTEC.",

year = "2000",

doi = "10.1016/S0921-4534(00)00885-6",

language = "English",

volume = "341-348",

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TY - JOUR

T1 - SQUID and magneto-optic investigations of flux turbulence

AU - Koblischka, M. R.

AU - Johansen, T. H.

AU - Baziljevich, M.

AU - Murakami, M.

AU - Wolf, Th

N1 - Funding Information: This work is partially supported by the Danish Technical Research Council and the Research Council of Norway; MRK acknowledges support from STA during the stay at SRL/ISTEC.

PY - 2000

Y1 - 2000

N2 - 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.

AB - 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.

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JO - Physica C: Superconductivity and its Applications

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IS - PART 3

ER -

SQUID and magneto-optic investigations of flux turbulence

Abstract

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