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Symmetry locking and commensurate vortex domain formation in periodic pinning arrays

Grigorenko, A.N., Bending, S.J., Van Bael, M.J., Lange, M., Moshchalkov, V.V., Fangohr, H. and de Groot, P.A.J. (2003) Symmetry locking and commensurate vortex domain formation in periodic pinning arrays Physical Review Letters, 90, (23), 237001-[4pp]. (doi:10.1103/PhysRevLett.90.237001).

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The spontaneous formation of domains of commensurate vortex patterns near rational fractional matching fields of a periodic pinning array has been investigated with high resolution scanning Hall probe microscopy. We show that domain formation is promoted due to the efficient incorporation of mismatched excess vortices and vacancies at the corners of domain walls, which outweighs the energetic cost of creating them. Molecular dynamics simulations with a generic pinning potential reveal that domains are formed only when vortex-vortex interactions are long range.

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Published date: 2003


Local EPrints ID: 22428
ISSN: 0031-9007
PURE UUID: 31cb9421-a6df-4159-89a9-2a87a757da9e

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Date deposited: 24 Mar 2006
Last modified: 25 Jul 2017 16:31

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Author: A.N. Grigorenko
Author: S.J. Bending
Author: M.J. Van Bael
Author: M. Lange
Author: V.V. Moshchalkov
Author: H. Fangohr
Author: P.A.J. de Groot

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