Phys. Rev. B 65, 140503(R) (2002) [4 pages]

Vortex states and magnetization curve of square mesoscopic superconductors

Abstract

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A. S. Mel’nikov^1,2, I. M. Nefedov¹, D. A. Ryzhov^1,*, I. A. Shereshevskii¹, V. M. Vinokur², and P. P. Vysheslavtsev¹
¹Institute for Physics of Microstructures, Russian Academy of Sciences, 603950, Nizhny Novgorod, GSP-105, Russia
²Argonne National Laboratory, Argonne, Illinois 60439

Received 13 December 2001; published 22 March 2002

The structure of the vortex states in a square mesoscopic superconductor is analyzed in detail using the numerical simulation within the time-dependent Ginzburg-Landau (TDGL) theory. Various vortex states (vortices, vortex molecules, multiquanta vortices) are observed and the magnetization curve is obtained. Different changes in vortex structures are identified with the peculiarities on the magnetization curve. Stability of a state consisting of vortices and antivortices is discussed.

URL:

http://link.aps.org/doi/10.1103/PhysRevB.65.140503

DOI:

10.1103/PhysRevB.65.140503

PACS:

74.25.Ha, 74.60.Ec

^*Email address: ryzhov@ipm.sci-nnov.ru

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Phys. Rev. B 65, 140503(R) (2002) [4 pages]

Vortex states and magnetization curve of square mesoscopic superconductors