Formation and behaviour of macrovortices during a turbulent relaxation process in high-Tc superconductors

M. R. Koblischka; T. H. Johansen

doi:10.1088/0953-8984/17/17/021

Formation and behaviour of macrovortices during a turbulent relaxation process in high-T_c superconductors

M. R. Koblischka, T. H. Johansen

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

1 Citation (Scopus)

Abstract

The time dependence of flux patterns obtained on an untwinned YBa ₂Cu₃O_7-δ single crystal showing the 'meandering instability' is observed at T = 65 K using magneto-optical imaging. When applying a reversed external field to a remanent state, along the front of invading antiflux, macrovortices or droplets of flux are formed, and eventually separate from the flux front in a spiral-like motion. The time-dependent behaviour of these macrovortices is investigated in detail.

Original language	English
Pages (from-to)	2723-2732
Number of pages	10
Journal	Journal of Physics Condensed Matter
Volume	17
Issue number	17
DOIs	https://doi.org/10.1088/0953-8984/17/17/021
Publication status	Published - 2005 May 4
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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10.1088/0953-8984/17/17/021

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abstract = "The time dependence of flux patterns obtained on an untwinned YBa 2Cu3O7-δ single crystal showing the 'meandering instability' is observed at T = 65 K using magneto-optical imaging. When applying a reversed external field to a remanent state, along the front of invading antiflux, macrovortices or droplets of flux are formed, and eventually separate from the flux front in a spiral-like motion. The time-dependent behaviour of these macrovortices is investigated in detail.",

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AU - Johansen, T. H.

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N2 - The time dependence of flux patterns obtained on an untwinned YBa 2Cu3O7-δ single crystal showing the 'meandering instability' is observed at T = 65 K using magneto-optical imaging. When applying a reversed external field to a remanent state, along the front of invading antiflux, macrovortices or droplets of flux are formed, and eventually separate from the flux front in a spiral-like motion. The time-dependent behaviour of these macrovortices is investigated in detail.

AB - The time dependence of flux patterns obtained on an untwinned YBa 2Cu3O7-δ single crystal showing the 'meandering instability' is observed at T = 65 K using magneto-optical imaging. When applying a reversed external field to a remanent state, along the front of invading antiflux, macrovortices or droplets of flux are formed, and eventually separate from the flux front in a spiral-like motion. The time-dependent behaviour of these macrovortices is investigated in detail.

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Formation and behaviour of macrovortices during a turbulent relaxation process in high-T_c superconductors

Abstract

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