dorsal/arxiv
View SchemaSpatio-temporal dynamics and plastic flow of vortices in superconductors with periodic arrays of pinning sites
| Authors | C. Reichhardt, J. Groth, C. J. Olson, Stuart Field, Franco Nori |
|---|---|
| Categories | |
| ArXiv ID | supr-con/9607005 |
| URL | https://arxiv.org/abs/supr-con/9607005 |
| DOI | 10.1103/PhysRevB.54.16108 |
| Journal | Phys. Rev. B 54 (1996) 16108-16115 |
Abstract
We present simulations of flux-gradient-driven superconducting rigid vortices interacting with square and triangular arrays of columnar pinning sites in an increasing external magnetic field. These simulations allow us to quantitatively relate spatio-temporal microscopic information of the vortex lattice with typically measured macroscopic quantities, such as the magnetization $M(H)$. The flux lattice does not become completely commensurate with the pinning sites throughout the sample at the magnetization matching peaks, but forms a commensurate lattice in a region close to the edge of the sample. Matching fields related to unstable vortex configurations do not produce peaks in $M(H)$. We observe a variety of evolving complex flux profiles, including flat terraces or plateaus separated by winding current-carrying strings and, near the peaks in $M(H)$, plateaus only in certain regions, which move through the sample as the field increases.
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"abstract": "We present simulations of flux-gradient-driven superconducting rigid vortices\ninteracting with square and triangular arrays of columnar pinning sites in an\nincreasing external magnetic field. These simulations allow us to\nquantitatively relate spatio-temporal microscopic information of the vortex\nlattice with typically measured macroscopic quantities, such as the\nmagnetization $M(H)$. The flux lattice does not become completely commensurate\nwith the pinning sites throughout the sample at the magnetization matching\npeaks, but forms a commensurate lattice in a region close to the edge of the\nsample. Matching fields related to unstable vortex configurations do not\nproduce peaks in $M(H)$. We observe a variety of evolving complex flux\nprofiles, including flat terraces or plateaus separated by winding\ncurrent-carrying strings and, near the peaks in $M(H)$, plateaus only in\ncertain regions, which move through the sample as the field increases.",
"arxiv_id": "supr-con/9607005",
"authors": [
"C. Reichhardt",
"J. Groth",
"C. J. Olson",
"Stuart Field",
"Franco Nori"
],
"categories": [
"supr-con",
"cond-mat.mtrl-sci",
"cond-mat.supr-con",
"nlin.PS",
"patt-sol"
],
"doi": "10.1103/PhysRevB.54.16108",
"journal_ref": "Phys. Rev. B 54 (1996) 16108-16115",
"title": "Spatio-temporal dynamics and plastic flow of vortices in superconductors with periodic arrays of pinning sites",
"url": "https://arxiv.org/abs/supr-con/9607005"
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