Abstract

We investigated configurational changes in mesoscopic vortex matter with less than thousand vortices during flux penetration in freestanding 50 μm diameter disks of Bi2Sr2CaCu2O8+δ. High-resolution AC and DC local magnetometry data reveal oscillations in the transmittivity echoed in peaks in the third-harmonics magnetic signal fainting on increasing vortex density. By means of extra experimental evidence and a simple geometrical analysis we show that these features fingerprint the discretized entrance of single-shells of vortices having a shape that mimics the sample edge.

Details

Title
Detection of discretized single-shell penetration in mesoscopic vortex matter
Author
Dolz, M I 1 ; Fasano, Y 2 ; N R Cejas Bolecek 2 ; Pastoriza, H 2 ; Konczykowski, M 3 ; C J van der Beek 3 

 Departamento de Física, Universidad Nacional de San Luis, CONICET, Argentina 
 Laboratorio de Bajas Temperaturas, Centro Atómico Bariloche, CNEA, Bariloche, Argentina 
 Laboratoire des Solides Irradiés, Ecole Polytechnique, CNRS URA-1380, Palaiseau, France 
Publication year
2014
Publication date
Dec 2014
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2576806688
Copyright
© 2014. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.