# American Institute of Mathematical Sciences

March  2012, 7(1): 179-196. doi: 10.3934/nhm.2012.7.179

## Renormalized Ginzburg-Landau energy and location of near boundary vortices

 1 Department of Mathematics, Penn State University, University Park, State College, PA 16802, United States 2 Mathematical Division, B. I. Verkin Institute for Low Temperature Physics and Engineering, 47 Lenin Avenue, Kharkov 61103, Ukraine 3 Department of Mathematics, Purdue University, 150 N. University St., West Lafayette, IN 47907

Received  April 2011 Revised  December 2011 Published  February 2012

We consider the location of near boundary vortices which arise in the study of minimizing sequences of Ginzburg-Landau functional with degree boundary condition. As the problem is not well-posed --- minimizers do not exist, we consider a regularized problem which corresponds physically to the presence of a superconducting layer at the boundary. The study of this formulation in which minimizers now do exist, is linked to the analysis of a version of renormalized energy. As the layer width decreases to zero, we show that the vortices of any minimizer converge to a point of the boundary with maximum curvature. This appears to be the first such result for complex-valued Ginzburg-Landau type problems.
Citation: Leonid Berlyand, Volodymyr Rybalko, Nung Kwan Yip. Renormalized Ginzburg-Landau energy and location of near boundary vortices. Networks & Heterogeneous Media, 2012, 7 (1) : 179-196. doi: 10.3934/nhm.2012.7.179
##### References:
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##### References:
 [1] N. André and I. Shafrir, On the minimizers of a Ginzburg-Landau-type energy when the boundary condition has zeros,, Adv. Differential Equations, 9 (2004), 891.   Google Scholar [2] P. Bauman, N. N. Carlson and D. Phillips, On the zeros of solutions to Ginzburg-Landau type systems,, SIAM J. Math. Anal., 24 (1993), 1283.  doi: 10.1137/0524073.  Google Scholar [3] F. Bethuel, H. Brezis and F. Hélein, Asymptotics for the minimization of a Ginzburg-Landau functional,, Calculus of Variations and PDEs, 1 (1993), 123.  doi: 10.1007/BF01191614.  Google Scholar [4] F. Bethuel, H. Brezis and F. Hélein, "Ginzburg-Landau Vortices,", Progress in Nonlinear Differential Equations and their Applications, 13 (1994).   Google Scholar [5] A. Boutet de Monvel-Berthier, V. Georgescu and R. Purice, A boundary value problem related to the Ginzburg-Landau model,, Comm. Math. Phys., 142 (1991), 1.  doi: 10.1007/BF02099170.  Google Scholar [6] L. Berlyand and P. Mironescu, Ginzburg-Landau minimizers with prescribed degrees. Capacity of the domain and emergence of vortices,, J. Funct. Anal., 239 (2006), 76.  doi: 10.1016/j.jfa.2006.03.006.  Google Scholar [7] L. Berlyand and V. Rybalko, Solutions with vortices of a semi-stiff boundary value problem for the Ginzburg-Landau equation,, J. Eur. Math. Soc., 12 (2010), 1497.  doi: 10.4171/JEMS/239.  Google Scholar [8] L. Berlyand and K. Voss, Symmetry breaking in annular domains for a Ginzburg-Landau superconductivity model,, in, (2001), 189.   Google Scholar [9] R. L. Jerrard, Lower bounds for generalized Ginzburg-Landau functionals,, SIAM J. Math. Anal., 30 (1999), 721.  doi: 10.1137/S0036141097300581.  Google Scholar [10] M. Kurzke, Boundary vortices in thin magnetic films,, Calc. Var. Partial Differential Equations, 26 (2006), 1.   Google Scholar [11] P. Mironescu, Explicit bounds for solutions to a Ginzburg-Landau type equations,, Rev. Roumain Math. Pure Appl., 41 (1996), 263.   Google Scholar [12] W.-M. Ni and I. Takagi, Locating the peaks of least-energy solutions to a semilinear Neumann problem,, Duke Math. J., 70 (1993), 247.   Google Scholar [13] B. White, Homotopy classes in Sobolev spaces and the existence of energy minimizing maps,, Acta Math., 160 (1988), 1.  doi: 10.1007/BF02392271.  Google Scholar
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