Self-organized superconducting textures in thin films
Andreas Glatz, Igor S. Aranson, Tatyana I. Baturina, Nikolay M. Chtchelkatchev, Valerii M. Vinokur
DOI 10.1103/PhysRevB.84.024508 · Physical Review B
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Abstract
The interplay between the superconducting order parameter and elastic fields, which are intimately connected to the very existence of the superconductivity itself, can result in a novel superconducting state: a regular self-organized texture of superconducting islands. We study the formation of these islands in a system of a thin superconducting film coupled elastically to a more rigid substrate and derive the phase diagram below the superconducting critical temperature depending on the elastic coupling constant of both subsystems. The fact that this pattern is a result of the Ginzburg-Landau description of superconductivity indicates that the formation of regular structures may be a common feature of the superconductor transition in the presence of long-range coupling.
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