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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Description/Abstract

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.

Item Type: Article
ISSNs: 0031-9007 (print)
Related URLs:
Subjects: T Technology > T Technology (General)
Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences
University Structure - Pre August 2011 > School of Physics and Astronomy > Quantum, Light and Matter
ePrint ID: 22428
Date Deposited: 24 Mar 2006
Last Modified: 28 Mar 2014 15:25
Research Funder: EPSRC
Projects:
Unknown (GR/S13200/01)
Funded by: EPSRC (GR/S13200/01)
UNSPECIFIED to UNSPECIFIED
Contact Email Address: fangohr@soton.ac.uk
URI: http://eprints.soton.ac.uk/id/eprint/22428

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