7th IMRMPT

Abstract

Abstract information

English title:	Type-I superconductivty: Spike vortex state
Spanish title:	Superconductividad tipo-I: Estado de v�rtices spike
English abstract:	The spike vortex-state is a meta-stable state that is found lowering the magnetic fields near to the normal-superconducting transition in conventional type I samples for a determined Ginzburg-Landau parameter κ range. We can say that the spike state is originated by the expulsion of vortex-bubbles originated by deformation of a conventional giant-vortex, this process takes some nanoseconds, and occurs at a upper single field H_3. The spike state is analyzed solving the time-dependent-Ginzburg-Landau equations numerically en FC and ZFC processes. We show the extrusion process for several geometries and selected a κ for a genuine type-I superconductor, we believe that the sharp edges plays an important role in the formation and stability of the spike state because increasing the number of edges in the sample, will be easier the transition to the superconducting state.
Spanish abstract:	El estado de v�rtice spike es un estado metaestable que se encuentra reduciendo los campos magn�ticos cerca de la transici�n superconductor-normal en muestras tipo I convencionales dentro de un rango de par�metro de Ginzburg-Landau κ determinado. Podemos decir que el estado spike se origina por la expulsi�n de burbujas-de v�rtices originadas por la deformaci�n de un v�rtice gigante convencional, este proceso toma algunos nanosegundos y ocurre en un solo campo superior H_3. Analizamos el estado spike resolviendo num�ricamente las ecuaciones de Ginzburg-Landau dependientes del tiempo en procesos FC and ZFC. Mostramos el proceso de extrusi�n para varias geometr�as y seleccionamos un κ para un superconductor tipo I genuino, creemos que los bordes afilados juegan un papel importante en la formaci�n y estabilidad del estado de pico porque al aumentar el n�mero de bordes en la muestra ser� m�s f�cil la transici�n al estado superconductor.
Topic:
Presentation Type:
Speaker:

Authors

Name	Institution	Email
Jose Jose Barba Ortega	Universidad Nacional de Colombia	jjbarbao@unal.edu.co
Miryam Rinc�n Joya	Universidad Nacional de Colombia	mrinconj@unal.edu.co
Cristian Andres Aguirre Tellez	Universidade Federal de Mato Grosso	cristian@fisica.ufmt.br

Presentation

Room:	Principal Room
Date:	June 7, 2023
Hour:	14:00 - 14:20

Back

7^th IMRMPT
Seventh International Meeting for Researchers in Materials and Plasma Technology

Previous editions:

        1st IMRMPT 2011
        2nd IMRMPT 2013
        3rd IMRMPT 2015
        4th IMRMPT 2017
        5th IMRMPT 2019
        5+1 IMRMPT 2021

Contact information:
imrmpt@foristom.org

Copyright 2022 FORISTOM
All rights reserved