Unpublished conference/Abstract (Scientific congresses and symposiums)
Determination of the magnetic penetration depth in a superconducting Pb film
Brisbois, Jérémy
20144th International Conference on Superconductivity and Magnetism
 

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Keywords :
superconductivity; probe microscopy; magnetic penetration depth
Abstract :
[en] By means of scanning Hall probe microscopy technique we accurately map the magnetic field pattern produced by Meissner screening currents in a thin superconducting Pb stripe. The obtained field profile allows us to quantitatively estimate the Pearl length Λ without the need of pre-calibrating the Hall sensor. This fact contrasts with the information acquired through the spatial field dependence of an individual flux quantum where the scanning height and the magnetic penetration depth combine in a single inseparable parameter. The derived London penetration depth λL coincides with the values previously reported for bulk Pb once the kinetic suppression of the order parameter is properly taken into account.
Disciplines :
Physics
Author, co-author :
Brisbois, Jérémy ;  Université de Liège - ULiège > Département de physique > Physique de la matière condensée
Language :
English
Title :
Determination of the magnetic penetration depth in a superconducting Pb film
Publication date :
01 May 2014
Event name :
4th International Conference on Superconductivity and Magnetism
Event organizer :
Center of Excellence for Superconductivity Research, University of Ankara
Event place :
Antalya, Turkey
Event date :
27/04-02/05/2014
Audience :
International
Available on ORBi :
since 06 May 2014

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