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Vortex pinning with bounded fields for the Ginzburg–Landau equation

✍ Scribed by Nelly Andre; Patricia Bauman; Dan Phillips


Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
222 KB
Volume
20
Category
Article
ISSN
0294-1449

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✦ Synopsis


We investigate vortex pinning in solutions to the Ginzburg-Landau equation. The coefficient, a(x), in the Ginzburg-Landau free energy modeling non-uniform superconductivity is nonnegative and is allowed to vanish at a finite number of points. For a sufficiently large applied magnetic field and for all sufficiently large values of the Ginzburg-Landau parameter κ = 1/ε, we show that minimizers have nontrivial vortex structures. We also show the existence of local minimizers exhibiting arbitrary vortex patterns, pinned near the zeros of a(x).  2003 Éditions scientifiques et médicales Elsevier SAS RÉSUMÉ. -On étudie la localisation des vortex des solutions de l'équation de Ginzburg-Landau. Dans l'énergie libre de Ginzburg-Landau, le coefficient a(x) modélise la supraconductivité non uniforme. Ce coefficient est positif et s'annule en un nombre fini de points. On montre que, pour un champ magnétique assez grand et pour toutes les valeurs du paramètre de Ginzbug-Landau κ = 1/ε assez grandes, les minimiseurs présentent des structures de vortex non triviales. On montre aussi l'existence de minimiseurs locaux présentant une structure prescrite de vortex situés au voisinage des zéros de a(x).


📜 SIMILAR VOLUMES


Radial solutions for the Ginzburg–Landau
✍ Myrto Sauvageot 📂 Article 📅 2003 🏛 Elsevier Science 🌐 English ⚖ 462 KB

The purpose of this work is a systematic study of symmetric vortices for the Ginzburg-Landau model of superconductivity along a cylinder, with applied magnetic ÿeld parallel to its axis. The Ginzburg-Landau constant Ä of the material and the degree d of the vortex are ÿxed. For any given parameters

Bounds for the solutions of the complex
✍ Alexander Mielke 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 599 KB

The diameter in the L~-norm of the global attractor of the complex Ginzburg-Landau equation ut = (1+lot) Au + Ru -(l+ifl)iul2"u is estimated by using weighted energy estimates for the solutions on the whole space R a. For all parameters d, or, oe, and fl for which global existence is known we obtain