Oscillating flux instability in vortex matter

M. Gitterman; B. Ya Shapiro; I. Shapiro; B. Kalisky; A. Shaulov; Y. Yeshurun

doi:10.1016/j.physc.2007.04.191

Oscillating flux instability in vortex matter

M. Gitterman, B. Ya Shapiro, I. Shapiro, B. Kalisky, A. Shaulov, Y. Yeshurun

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

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Abstract

We explain theoretically an oscillatory behaviour in space and time of the magnetic induction in Bi₂Sr₂CaCu₂O_8+δ crystals during magnetic relaxation. This new "flux waves" phenomenon appears near the order-disorder vortex phase transition, under specific conditions of temperature and induction gradient. Our theory is based on two coupled equations: The Landau-Ginzburg equation for the order parameter of the vortex phase transition and the diffusion equation for the magnetic induction. Linear stability analysis of these equations shows an appearance of oscillatory instabilities characterized by a period and wavelength that are in accordance with the experimental results.

Original language	English
Pages (from-to)	1247-1248
Number of pages	2
Journal	Physica C: Superconductivity and its Applications
Volume	460-462 II
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2007.04.191
State	Published - 1 Sep 2007

Bibliographical note

Funding Information:
This research is supported by the Israel Science Foundation (ISF) – Centre of Excellence Program (Grant No. 8003/02) and the Heinrich Hertz Minerva Centre for High Temperature Superconductivity. Y.Y. and B.Ya.S. acknowledge support from the German–Israel Foundation (GIF). B.Ya.S. acknowledges a support from the ISF (Grant No. 4/03-11.7).

Keywords

Flux dynamics
High temperature superconductors
Vortex matter

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10.1016/j.physc.2007.04.191

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title = "Oscillating flux instability in vortex matter",

abstract = "We explain theoretically an oscillatory behaviour in space and time of the magnetic induction in Bi2Sr2CaCu2O8+δ crystals during magnetic relaxation. This new {"}flux waves{"} phenomenon appears near the order-disorder vortex phase transition, under specific conditions of temperature and induction gradient. Our theory is based on two coupled equations: The Landau-Ginzburg equation for the order parameter of the vortex phase transition and the diffusion equation for the magnetic induction. Linear stability analysis of these equations shows an appearance of oscillatory instabilities characterized by a period and wavelength that are in accordance with the experimental results.",

keywords = "Flux dynamics, High temperature superconductors, Vortex matter",

author = "M. Gitterman and Shapiro, {B. Ya} and I. Shapiro and B. Kalisky and A. Shaulov and Y. Yeshurun",

note = "Funding Information: This research is supported by the Israel Science Foundation (ISF) – Centre of Excellence Program (Grant No. 8003/02) and the Heinrich Hertz Minerva Centre for High Temperature Superconductivity. Y.Y. and B.Ya.S. acknowledge support from the German–Israel Foundation (GIF). B.Ya.S. acknowledges a support from the ISF (Grant No. 4/03-11.7).",

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doi = "10.1016/j.physc.2007.04.191",

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AU - Gitterman, M.

AU - Shapiro, B. Ya

AU - Shapiro, I.

AU - Kalisky, B.

AU - Shaulov, A.

AU - Yeshurun, Y.

N1 - Funding Information: This research is supported by the Israel Science Foundation (ISF) – Centre of Excellence Program (Grant No. 8003/02) and the Heinrich Hertz Minerva Centre for High Temperature Superconductivity. Y.Y. and B.Ya.S. acknowledge support from the German–Israel Foundation (GIF). B.Ya.S. acknowledges a support from the ISF (Grant No. 4/03-11.7).

PY - 2007/9/1

Y1 - 2007/9/1

N2 - We explain theoretically an oscillatory behaviour in space and time of the magnetic induction in Bi2Sr2CaCu2O8+δ crystals during magnetic relaxation. This new "flux waves" phenomenon appears near the order-disorder vortex phase transition, under specific conditions of temperature and induction gradient. Our theory is based on two coupled equations: The Landau-Ginzburg equation for the order parameter of the vortex phase transition and the diffusion equation for the magnetic induction. Linear stability analysis of these equations shows an appearance of oscillatory instabilities characterized by a period and wavelength that are in accordance with the experimental results.

AB - We explain theoretically an oscillatory behaviour in space and time of the magnetic induction in Bi2Sr2CaCu2O8+δ crystals during magnetic relaxation. This new "flux waves" phenomenon appears near the order-disorder vortex phase transition, under specific conditions of temperature and induction gradient. Our theory is based on two coupled equations: The Landau-Ginzburg equation for the order parameter of the vortex phase transition and the diffusion equation for the magnetic induction. Linear stability analysis of these equations shows an appearance of oscillatory instabilities characterized by a period and wavelength that are in accordance with the experimental results.

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KW - High temperature superconductors

KW - Vortex matter

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IS - SPEC. ISS.

ER -

Oscillating flux instability in vortex matter

Abstract

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Keywords

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