φ0 as a smallest unit of the intermediate state of a type-I superconductor: Revelation through nonlinear dynamics

Golibjon Berdiyorov; Alexander Hernandez-Nieves; F Peeters; Daniel Dominguez; M Milosevic

φ0 as a smallest unit of the intermediate state of a type-I superconductor: Revelation through nonlinear dynamics

Golibjon Berdiyorov, Alexander Hernandez-Nieves, F Peeters, Daniel Dominguez, M Milosevic

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Abstract

We study by time-dependent Ginzburg-Landau simulations the nonlinear dynamics of the intermediate state in a current-carrying type-I superconductor. The stray magnetic field of the current induces the intermediate state, where nucleation of flux domains is discretized to a single fluxoid at a time, while their final shape (tubular or laminar), size and nucleation rate depend on applied current and edge conditions. The current induces opposite flux domains on opposite sides of the sample, and subsequently drives them to annihilation -- which is also discretized, as a sequence of vortex-antivortex pairs. Discretization of both nucleation and annihilation leave measurable traces in the voltage signal across the sample. These dynamic phenomena provide an unambiguous proof of a flux quantum being the smallest building block of the intermediate state in type-I superconductors.

Original language	English
Journal	APS March Meeting Abstracts
Publication status	Published - Feb 2012
Externally published	Yes

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Berdiyorov, G., Hernandez-Nieves, A., Peeters, F., Dominguez, D., & Milosevic, M. (2012). φ0 as a smallest unit of the intermediate state of a type-I superconductor: Revelation through nonlinear dynamics. APS March Meeting Abstracts. https://scholar.google.com/citations?view_op=view_citation&hl=en&user=CJM4hqsAAAAJ&cstart=100&pagesize=100&citation_for_view=CJM4hqsAAAAJ:TQgYirikUcIC

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title = "φ0 as a smallest unit of the intermediate state of a type-I superconductor: Revelation through nonlinear dynamics",

abstract = "We study by time-dependent Ginzburg-Landau simulations the nonlinear dynamics of the intermediate state in a current-carrying type-I superconductor. The stray magnetic field of the current induces the intermediate state, where nucleation of flux domains is discretized to a single fluxoid at a time, while their final shape (tubular or laminar), size and nucleation rate depend on applied current and edge conditions. The current induces opposite flux domains on opposite sides of the sample, and subsequently drives them to annihilation -- which is also discretized, as a sequence of vortex-antivortex pairs. Discretization of both nucleation and annihilation leave measurable traces in the voltage signal across the sample. These dynamic phenomena provide an unambiguous proof of a flux quantum being the smallest building block of the intermediate state in type-I superconductors.",

author = "Golibjon Berdiyorov and Alexander Hernandez-Nieves and F Peeters and Daniel Dominguez and M Milosevic",

year = "2012",

month = feb,

language = "English",

journal = "APS March Meeting Abstracts",

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Berdiyorov, G, Hernandez-Nieves, A, Peeters, F, Dominguez, D & Milosevic, M 2012, 'φ0 as a smallest unit of the intermediate state of a type-I superconductor: Revelation through nonlinear dynamics', APS March Meeting Abstracts. <https://scholar.google.com/citations?view_op=view_citation&hl=en&user=CJM4hqsAAAAJ&cstart=100&pagesize=100&citation_for_view=CJM4hqsAAAAJ:TQgYirikUcIC>

TY - JOUR

T1 - φ0 as a smallest unit of the intermediate state of a type-I superconductor: Revelation through nonlinear dynamics

AU - Berdiyorov, Golibjon

AU - Hernandez-Nieves, Alexander

AU - Peeters, F

AU - Dominguez, Daniel

AU - Milosevic, M

PY - 2012/2

Y1 - 2012/2

N2 - We study by time-dependent Ginzburg-Landau simulations the nonlinear dynamics of the intermediate state in a current-carrying type-I superconductor. The stray magnetic field of the current induces the intermediate state, where nucleation of flux domains is discretized to a single fluxoid at a time, while their final shape (tubular or laminar), size and nucleation rate depend on applied current and edge conditions. The current induces opposite flux domains on opposite sides of the sample, and subsequently drives them to annihilation -- which is also discretized, as a sequence of vortex-antivortex pairs. Discretization of both nucleation and annihilation leave measurable traces in the voltage signal across the sample. These dynamic phenomena provide an unambiguous proof of a flux quantum being the smallest building block of the intermediate state in type-I superconductors.

AB - We study by time-dependent Ginzburg-Landau simulations the nonlinear dynamics of the intermediate state in a current-carrying type-I superconductor. The stray magnetic field of the current induces the intermediate state, where nucleation of flux domains is discretized to a single fluxoid at a time, while their final shape (tubular or laminar), size and nucleation rate depend on applied current and edge conditions. The current induces opposite flux domains on opposite sides of the sample, and subsequently drives them to annihilation -- which is also discretized, as a sequence of vortex-antivortex pairs. Discretization of both nucleation and annihilation leave measurable traces in the voltage signal across the sample. These dynamic phenomena provide an unambiguous proof of a flux quantum being the smallest building block of the intermediate state in type-I superconductors.

M3 - Meeting Abstract

JO - APS March Meeting Abstracts

JF - APS March Meeting Abstracts

ER -

φ0 as a smallest unit of the intermediate state of a type-I superconductor: Revelation through nonlinear dynamics

Abstract

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