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Deconfinement in the Two Dimensional XY Model
H. A. Fertig
The unbinding of vortex-antivortex pairs for the classical two-dimensional XY model in a magnetic field is studied. A single such pair is connected by a string of overturned spins,…
Core Strings and Flux Spreading Near Pinning Centers
D. J. Priour, H. A. Fertig
At the nucleus of a superconducting vortex is a small, circular region where superconductivity is destroyed. Like an atomic nucleus, this core may become deformed, and such distort…
London equation studies of thin-film superconductors with a triangular antidot lattice
Sa-Lin Cheng, D. J. Priour, H. A. Fertig
We report on a study of vortex pinning in nanoscale antidot defect arrays in the context of the London Theory. Using a wire network model, we discretize the array with a fine mesh,…
Hamiltonian Theory of the Composite Fermion Wigner Crystal
R. Narevich, Ganpathy Murthy, H. A. Fertig
Experimental results indicating the existence of the high magnetic field Wigner Crystal have been available for a number of years. While variational wavefunctions have demonstrated…