caa a22 4500 445381094 CHVBK 20180317143017.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10948-010-0904-8 doi (NATIONALLICENCE)springer-10.1007/s10948-010-0904-8 Vortex-Antivortex Dynamics in a Mesoscopic Superconducting Prism with a Centered Antidot [Elektronische Daten] [J. Barba-Ortega, E. Sardella, J. Aguiar] In this work, we investigated theoretically the dynamics of the annihilation of a vortex-antivortex pair in a superconducting mesoscopic prism of square transversal section with a square antidot inserted at its center. The sample is immersed in a magnetic field applied perpendicular to the sample plane. It is assumed that the inner hole is made of a material whose properties are accounted on de Gennes boundary conditions via de Gennes extrapolation length (b parameter). We analyze the nucleation of vortices and antivortices by increasing the magnetic field from zero until the first vortex is created and then reversing the polarity of the applied magnetic field until an antivortex is also created. Depending on the b parameter, the vortex-antivortex encounter can take place at the hole or at the superconducting region around it. In the framework of the time dependent Ginzburg-Landau theory, we calculate the magnetization, order parameter topology, the position and the velocity of the vortex and antivortex singularities as a function of time. Springer Science+Business Media, LLC, 2010 De Gennes parameter nationallicence Ginzburg-Landau nationallicence Lorentz force nationallicence Pinning force nationallicence Barba-Ortega J. Grupo de Física de Nuevos Materiales, Universidad Nacional de Colombia, Bogotá, Colombia aut Sardella E. Departamento de Física, Faculdade de Ciências, UNESP- Universidade Estadual Paulista, Caixa Postal 473, 17033-360, Bauru-SP, Brazil aut Aguiar J. Laboratório de Supercondutividade e Materiais Avançados, Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife, Brazil aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 97-100 1557-1939 24:1-2<97 2011 24 10948 https://doi.org/10.1007/s10948-010-0904-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-0904-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Barba-Ortega J. Grupo de Física de Nuevos Materiales, Universidad Nacional de Colombia, Bogotá, Colombia aut NATIONALLICENCE 700 1- Sardella E. Departamento de Física, Faculdade de Ciências, UNESP- Universidade Estadual Paulista, Caixa Postal 473, 17033-360, Bauru-SP, Brazil aut NATIONALLICENCE 700 1- Aguiar J. Laboratório de Supercondutividade e Materiais Avançados, Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife, Brazil aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 97-100 1557-1939 24:1-2<97 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer