Mobile fluxons as coherent probes of periodic pinning in superconductors

Abstract The interaction of (quasi)particles with a periodic potential arises in various domains of science and engineering, such as solid-state physics, chemical physics, and communication theory. An attractive test ground to investigate this interaction is represented by superconductors with artif...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Oleksandr V. Dobrovolskiy, Michael Huth, Valerij A. Shklovskij, Ruslan V. Vovk
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e6c2e2ea8b0e4a958affee33c7e390a5
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:e6c2e2ea8b0e4a958affee33c7e390a5
record_format	dspace
spelling	oai:doaj.org-article:e6c2e2ea8b0e4a958affee33c7e390a52021-12-02T11:52:58ZMobile fluxons as coherent probes of periodic pinning in superconductors10.1038/s41598-017-14232-z2045-2322https://doaj.org/article/e6c2e2ea8b0e4a958affee33c7e390a52017-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-14232-zhttps://doaj.org/toc/2045-2322Abstract The interaction of (quasi)particles with a periodic potential arises in various domains of science and engineering, such as solid-state physics, chemical physics, and communication theory. An attractive test ground to investigate this interaction is represented by superconductors with artificial pinning sites, where magnetic flux quanta (Abrikosov vortices) interact with the pinning potential U(r) = U(r + R) induced by a nanostructure. At a combination of microwave and dc currents, fluxons act as mobile probes of U(r): The ac component shakes the fluxons in the vicinity of their equilibrium points which are unequivocally determined by the local pinning force counterbalanced by the Lorentz force induced by the dc current, linked to the curvature of U(r) which can then be used for a successful fitting of the voltage responses. A good correlation of the deduced dependences U(r) with the cross sections of the nanostructures points to that pinning is primarily caused by vortex length reduction. Our findings pave a new route to a non-destructive evaluation of periodic pinning in superconductor thin films. The approach should also apply to a broad class of systems whose evolution in time can be described by the coherent motion of (quasi)particles in a periodic potential.Oleksandr V. DobrovolskiyMichael HuthValerij A. ShklovskijRuslan V. VovkNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Oleksandr V. Dobrovolskiy Michael Huth Valerij A. Shklovskij Ruslan V. Vovk Mobile fluxons as coherent probes of periodic pinning in superconductors
description	Abstract The interaction of (quasi)particles with a periodic potential arises in various domains of science and engineering, such as solid-state physics, chemical physics, and communication theory. An attractive test ground to investigate this interaction is represented by superconductors with artificial pinning sites, where magnetic flux quanta (Abrikosov vortices) interact with the pinning potential U(r) = U(r + R) induced by a nanostructure. At a combination of microwave and dc currents, fluxons act as mobile probes of U(r): The ac component shakes the fluxons in the vicinity of their equilibrium points which are unequivocally determined by the local pinning force counterbalanced by the Lorentz force induced by the dc current, linked to the curvature of U(r) which can then be used for a successful fitting of the voltage responses. A good correlation of the deduced dependences U(r) with the cross sections of the nanostructures points to that pinning is primarily caused by vortex length reduction. Our findings pave a new route to a non-destructive evaluation of periodic pinning in superconductor thin films. The approach should also apply to a broad class of systems whose evolution in time can be described by the coherent motion of (quasi)particles in a periodic potential.
format	article
author	Oleksandr V. Dobrovolskiy Michael Huth Valerij A. Shklovskij Ruslan V. Vovk
author_facet	Oleksandr V. Dobrovolskiy Michael Huth Valerij A. Shklovskij Ruslan V. Vovk
author_sort	Oleksandr V. Dobrovolskiy
title	Mobile fluxons as coherent probes of periodic pinning in superconductors
title_short	Mobile fluxons as coherent probes of periodic pinning in superconductors
title_full	Mobile fluxons as coherent probes of periodic pinning in superconductors
title_fullStr	Mobile fluxons as coherent probes of periodic pinning in superconductors
title_full_unstemmed	Mobile fluxons as coherent probes of periodic pinning in superconductors
title_sort	mobile fluxons as coherent probes of periodic pinning in superconductors
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/e6c2e2ea8b0e4a958affee33c7e390a5
work_keys_str_mv	AT oleksandrvdobrovolskiy mobilefluxonsascoherentprobesofperiodicpinninginsuperconductors AT michaelhuth mobilefluxonsascoherentprobesofperiodicpinninginsuperconductors AT valerijashklovskij mobilefluxonsascoherentprobesofperiodicpinninginsuperconductors AT ruslanvvovk mobilefluxonsascoherentprobesofperiodicpinninginsuperconductors
_version_	1718394958836137984

Mobile fluxons as coherent probes of periodic pinning in superconductors

Ejemplares similares