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

Contenido principal del artículo

Cristian Andrés Aguirre-Tellez
Ely Dannier Valbuena-Niño
José José Barba-Ortega
Resumen

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.


 

Palabras clave

Descargas

Los datos de descargas todavía no están disponibles.

Detalles del artículo

Referencias

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. DOI: https://doi.org/10.1103/PhysRevB.3.3821

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. DOI: https://doi.org/10.1016/j.physleta.2015.10.013

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. DOI: https://doi.org/10.1038/35065039

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. DOI: https://doi.org/10.1103/PhysRevLett.89.067001

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. DOI: https://doi.org/10.1088/1361-648X/29/3/035602

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. DOI: https://doi.org/10.1103/PhysRevB.84.094515

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. DOI: https://doi.org/10.1103/PhysRevB.85.134514

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. DOI: https://doi.org/10.1103/PhysRevB.83.174509

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. DOI: https://doi.org/10.1016/j.physc.2018.02.001

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. DOI: https://doi.org/10.1088/0953-2048/28/3/034001

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. DOI: https://doi.org/10.1143/JPSJ.72.1619

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. DOI: https://doi.org/10.1007/s10909-016-1695-5

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. DOI: https://doi.org/10.1007/s10948-010-0904-8

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. DOI: https://doi.org/10.1103/PhysRevB.85.024521

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. DOI: https://doi.org/10.1016/j.physc.2016.08.003

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. DOI: https://doi.org/10.1007/s10909-020-02551-x

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. DOI: https://doi.org/10.1103/PhysRevLett.116.097002

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. DOI: https://doi.org/10.1088/0953-2048/24/1/015001

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. DOI: https://doi.org/10.1103/PhysRevLett.105.067003

H. Fink and W. Joiner, “Surface Nucleation and Boundary Conditions in Superconductors”, Physical Review Letters, vol. 23, no. 3, pp. 120-123, July 1969. DOI: https://doi.org/10.1103/PhysRevLett.23.120

V. Ginzburg, “On Surface Superconductivity”, Physics Letters, vol. 13, no.2, pp. 101-102, November 1964. DOI: https://doi.org/10.1016/0031-9163(64)90672-9

Artículos más leídos del mismo autor/a

Sistema OJS - Metabiblioteca |