Estado de vórtices en un cuadrado superconductor de dos-orbitales con condiciones de contorno mixtas
Vortex state in a superconducting two-orbital square with mixed boundary conditions
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En esta contribución estudiamos el estado de vórtices en una muestra cuadrada superconductora de dos orbitales en presencia de un campo magnético externo H constante en un proceso de zero-field-cooling. La muestra está en contacto con diferentes tipos de materiales simulados a través del parámetro de extrapolación de deGennes (b) . Nuestra investigación se lleva a cabo resolviendo las ecuaciones Ginzburg-Landau dependientes del tiempo en dos dimensiones. Estudiamos la inducción magnética, densidad de electrones superconductores y la fase del parámetro de orden para diferentes valores de b sobre la superficie de la muestra. Para ello, usamos dos combinaciones de condiciones de contorno para las cuatro superficies del cuadrado. Mostramos novedosas e interesante configuración de vórtices altamente dependiente de los valores escogidos de b, temperatura, y tamaño de la muestra.
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A. A. Abrikosov, “On the magnetic properties of superconductors of the second group”, Soviet Physics, JETP, vol. 5, pp. 1174-1182, June 1957.
L. Kramer, “Thermodynamic Behavior of Type-II Superconductors with Small κ near the Lower Critical Field”, Physical Review B, vol. 3, pp. 3821-3825, June 1971.
J. Barba-Ortega, E. Sardella, “Superconducting properties of a mesoscopic parallelepiped with anisotropic surface conditions”, Physics Letters A, vol. 379, pp. 3130-3135, October 2015.
J. Barba-Ortega, Edson Sardella, J. A. Aguiar, “Superconducting boundary conditions for mesoscopic circular samples”, Superconductor Science and Technology, vol. 24, no. 015001, pp. 1-7, December 2010.
J. Nagamatsu, N. Nakagawa, T. Muranaka, Y. Zenitani, J. Akimitsu, “Superconductivity at 39 K in magnesium diboride”, Nature, vol. 410, pp. 63-64, March 2001.
E. Babaev, “Vortices with Fractional Flux in Two-Gap Superconductors and in Extended Faddeev Model”, Physical Review Letters, vol. 89, no. 6, pp. 0670011-0670014, August 2002.
Q. Meng, C. N. Varney, H. Fangohr, E. Babaev, “Phase diagrams of vortex matter with multi-scale inter-vortex interactions in layered superconductors”, Journal of Physics: Condensed Matter, vol. 29, no. 035602, pp. 1-16, November 2016.
M. Silaev, E. Babaev, “Microscopic theory of type-1.5 superconductivity in multi-band systems”, Physical Review B, vol. 84, no. 094515, pp. 1-9, September 2011.
M. Silaev, E. Babaev, “Microscopic derivation of two-component Ginzburg-Landau model and conditions of its applicability in two-band systems”, Physical Review B, vol. 85, no. 134514, pp. 1-12, April 2012.
J. Carlström, E. Babaev, M. Speight, “Type-1.5 superconductivity in multiband systems: Effects of interband couplings”, Physical Review B, vol. 83, no. 174509, pp. 1-17, May 2011.
Y. Tanaka, H. Yamamori, T. Yanagisawa, T. Nishio, S. Arisawa, “Experimental formation of a fractional vortex in a superconducting bi-layer”, Physica C, vol. 548, pp. 44-49, May 2018.
F. S. Portela, L. T. Corredor, P. Barrozo, S. G. Jung, G. Zhang, J. Vanacken, V. V. Moshchalkov, J. A. Aguiar, “Superconducting properties of Nb/Pb/Nb trilayer”, Superconductor Science and Technology, vol. 28, no. 034001, pp. 1-4, January 2015.
T. Yanagisawa, H. Shibata, “Orbital-Dependent Two-Band Superconductivity in MgB2”, Journal of the Physical Society of Japan, vol. 72, pp. 1619-1622, April 2003.
C. Aguirre, M. R. Joya, J. Barba-Ortega, “Effect of Anti-dots on the Magnetic Susceptibility in a Superconducting Long Prism”, Journal of Low Temperature Physics, vol. 186, pp. 250-258, November 2016.
J. Barba-Ortega, E. Sardella, J. Albino Aguiar, “Vortex–Antivortex Dynamics in a Mesoscopic Superconducting Prism with a Centered Antidot”, Journal of Superconductivity and Novel Magnetism, vol. 24, pp. 97-100, September 2010.
V. E. Manucharyan, N. A. Masluk, A. Kamal, J. Koch, L. I. Glazman, M. H. Devoret, “Evidence for coherent quantum phase slips across a Josephson junction array”, Physical Review B, vol. 85, no. 024521, pp. 1-15, January 2012.
E. Babaev, J. Carlström, M. Silaev, J. M. Speight, “Type-1.5 superconductivity in multicomponent systems”, Physica C, vol. 533, pp. 20-35, Febraury 2017.
S. Yao, L. Peng, J. Lin, J. Chen, C. Cai, Y. Zhou, “Properties of Vortex Configurations in Two-Band Mesoscopic Superconductors with Josephson Coupling: The Ginzburg–Landau Theory”, Journal of Low Temperature Physics, vol. 202, pp. 329-342, February 2021.
J. Garaud, M. Silaev, and E. Babaev, “Thermoelectric Signatures of Time-Reversal Symmetry Breaking States in Multiband Superconductors”, Physical Review Letters, vol. 116, no. 097002, pp. 1-7, March 2016.
J. Barba-Ortega, E. D. V. Niño, E. Sardella, “Parámetro GL (κ) múltiple en una placa superconductora”, Universidad Ciencia y Tecnología, vol. 20, no. 79, pp. 87-91, June 2016.
J. Barba-Ortega, E. Sardella, J. A. Aguiar, “Superconducting boundary conditions for mesoscopic circular samples”, Superconductor Science and Technology, vol. 24, no. 015001, pp. 1-7, December 2010.
E. Babaev, J. Carlström, M. Speight, “Type-1.5 Superconducting State from an Intrinsic Proximity Effect in Two-Band Superconductors”, Physical Review Letters, vol. 105, no. 067003, pp. 1-4, August 2010.
H. Fink and W. Joiner, “Surface Nucleation and Boundary Conditions in Superconductors”, Physical Review Letters, vol. 23, no. 3, pp. 120-123, July 1969.
V. Ginzburg, “On Surface Superconductivity”, Physics Letters, vol. 13, no.2, pp. 101-102, November 1964.
