Symmetry transformation of the three-dimensional vortex system induced by two-dimensional square pinning potentials

We report on symmetry changes of the bulk hexagonal vortex lattice induced by commensurate and incommensurate engineered 2D square pinning structures of Fe dots, deposited on one surface of Bi2Sr2CaCu2O8 single crystals. (C) 2004 Elsevier B.V. All rights reserved.