Premium
Vortex shells in square arrays of pinning sites
Author(s) -
Yetis Hakan
Publication year - 2011
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201046437
Subject(s) - vortex , vorticity , pinning force , condensed matter physics , superconductivity , square (algebra) , physics , magnetic field , mechanics , geometry , critical current , mathematics , quantum mechanics
We investigate the vortex states interacting with a square array of pinning sites in a superconducting sample by using a molecular dynamics approach. An improved potential is used to model the interaction between the vortices and the pinning sites. We found several shell‐type structures depending on the numbers of the vortices and pinning sites. We show that the vorticity increases with increasing of magnetic field and (meta)stable vortex shells occur due to the changes in the vorticity. We deduce that the large pinning sizes are essential to obtain higher order vortex shells. Our results are compared with those obtained from the numerical and experimental studies.