Magnetic field delocalization and flux inversion in fractional vortices in two-component superconductors.

Physical review letters · 2009 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 3331

Study snapshot

PublicationPhysical review letters · 2009

Study typeother

Reported directionUnclear

Evidence ratingInsufficient

Abstract

We demonstrate that, in contrast with the single-component Abrikosov vortex, in two-component superconductors vortex solutions with an exponentially screened magnetic field exist only in exceptional cases: in the case of vortices carrying an integer number of flux quanta and in a special parameter limit for half-quantum vortices. For all other parameters, the vortex solutions have a delocalized magnetic field with a slowly decaying tail. Furthermore, we demonstrate a new effect which is generic in two-component systems but has no counterpart in single-component systems: on exactly half of the parameter space of the U(1) x U(1) Ginzburg-Landau model, the magnetic field of a generic fractional vortex inverts its direction at a certain distance from the vortex core.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeother

Effect directionunclear

PopulationNot supplied

Sample sizeNot supplied

ExposureNot supplied

Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

In two-component superconductors, vortex solutions with an exponentially screened magnetic field occur only in exceptional cases (integer-flux vortices and a special parameter limit for half-quantum vortices). For other parameters, vortex solutions exhibit a delocalized magnetic field with a slowly decaying tail, and in half of the parameter space of the U(1) x U(1) Ginzburg-Landau model the magnetic field of a generic fractional vortex inverts direction at some distance from the core.

Outcomes measured

Magnetic field delocalization in vortices
Flux inversion (magnetic field direction inversion) in fractional vortices
Conditions for exponentially screened magnetic fields in two-component superconductors

View raw extracted JSON

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  "outcomes": [
    "Magnetic field delocalization in vortices",
    "Flux inversion (magnetic field direction inversion) in fractional vortices",
    "Conditions for exponentially screened magnetic fields in two-component superconductors"
  ],
  "main_findings": "In two-component superconductors, vortex solutions with an exponentially screened magnetic field occur only in exceptional cases (integer-flux vortices and a special parameter limit for half-quantum vortices). For other parameters, vortex solutions exhibit a delocalized magnetic field with a slowly decaying tail, and in half of the parameter space of the U(1) x U(1) Ginzburg-Landau model the magnetic field of a generic fractional vortex inverts direction at some distance from the core.",
  "effect_direction": "unclear",
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  "keywords": [
    "two-component superconductors",
    "Abrikosov vortex",
    "fractional vortex",
    "half-quantum vortex",
    "magnetic field delocalization",
    "flux inversion",
    "U(1) x U(1) Ginzburg-Landau model"
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}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1103/physrevlett.103.237002
PubMed: 20366165

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