Disclosed is a method and apparatus for strongly enhancing vortex pinning by conformal crystal arrays. The conformal crystal array is constructed by a conformal transformation of a hexagonal lattice, producing a non-uniform structure with a gradient where the local six-fold coordination of the pinning sites is preserved, and with an arching effect. The conformal pinning arrays produce significantly enhanced vortex pinning over a much wider range of field than that found for other vortex pinning geometries with an equivalent number of vortex pinning sites, such as random, square, and triangular.
GOVERNMENT LICENSE RIGHTS
This invention was made with government support under Grant No. DE-AC52-06NA25396 awarded by the Department of Energy and Grant No. LDRD-20100273ER awarded by Los Alamos National Laboratory. The government has certain rights in the invention.