Flux-lines of inversed sign in YBa2Cu3O7-δ thin films

Th Schuster; M. R. Koblischka; H. Kuhn; B. Ludescher; M. Leghissa; M. Lippert; H. Kronmüller

doi:10.1016/0921-4534(92)90460-T

Flux-lines of inversed sign in YBa₂Cu₃O_7-δ thin films

Th Schuster, M. R. Koblischka, H. Kuhn, B. Ludescher, M. Leghissa, M. Lippert, H. Kronmüller

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

30 Citations (Scopus)

Abstract

Using the high-resolution Faraday technique (HRF), we observed directly the nucleation of flux-lines of opposite sign in the remanent state of YBaCuO thin films. These negative flux-lines are nucleated by the stray fields caused by the pinned vortices. Due to the large demagnetizing factor of the thin film, this flux is able to penetrate the sample. Such a coupled behaviour can be observed directly. Experimental evidence for the existence of vortices of opposite sign is given. The influence of various polarizer/ analyzer settings on these observations is discussed. Furthermore, we show effects of flux-creep in thin films and the role of the negative flux-lines in this behavior is analyzed.

Original language	English
Pages (from-to)	373-382
Number of pages	10
Journal	Physica C: Superconductivity and its applications
Volume	196
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(92)90460-T
Publication status	Published - 1992 Jun 20
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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10.1016/0921-4534(92)90460-T

Cite this

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title = "Flux-lines of inversed sign in YBa2Cu3O7-δ thin films",

abstract = "Using the high-resolution Faraday technique (HRF), we observed directly the nucleation of flux-lines of opposite sign in the remanent state of YBaCuO thin films. These negative flux-lines are nucleated by the stray fields caused by the pinned vortices. Due to the large demagnetizing factor of the thin film, this flux is able to penetrate the sample. Such a coupled behaviour can be observed directly. Experimental evidence for the existence of vortices of opposite sign is given. The influence of various polarizer/ analyzer settings on these observations is discussed. Furthermore, we show effects of flux-creep in thin films and the role of the negative flux-lines in this behavior is analyzed.",

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T1 - Flux-lines of inversed sign in YBa2Cu3O7-δ thin films

AU - Schuster, Th

AU - Koblischka, M. R.

AU - Kuhn, H.

AU - Ludescher, B.

AU - Leghissa, M.

AU - Lippert, M.

AU - Kronmüller, H.

PY - 1992/6/20

Y1 - 1992/6/20

N2 - Using the high-resolution Faraday technique (HRF), we observed directly the nucleation of flux-lines of opposite sign in the remanent state of YBaCuO thin films. These negative flux-lines are nucleated by the stray fields caused by the pinned vortices. Due to the large demagnetizing factor of the thin film, this flux is able to penetrate the sample. Such a coupled behaviour can be observed directly. Experimental evidence for the existence of vortices of opposite sign is given. The influence of various polarizer/ analyzer settings on these observations is discussed. Furthermore, we show effects of flux-creep in thin films and the role of the negative flux-lines in this behavior is analyzed.

AB - Using the high-resolution Faraday technique (HRF), we observed directly the nucleation of flux-lines of opposite sign in the remanent state of YBaCuO thin films. These negative flux-lines are nucleated by the stray fields caused by the pinned vortices. Due to the large demagnetizing factor of the thin film, this flux is able to penetrate the sample. Such a coupled behaviour can be observed directly. Experimental evidence for the existence of vortices of opposite sign is given. The influence of various polarizer/ analyzer settings on these observations is discussed. Furthermore, we show effects of flux-creep in thin films and the role of the negative flux-lines in this behavior is analyzed.

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Flux-lines of inversed sign in YBa₂Cu₃O_7-δ thin films

Abstract

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