$Bridge in micron-sized Bi$_2$ Sr$_2$ CaCu$_2$ O$_{8 + y}$ sample act as converging lens for vortices$

Bridge in micron-sized Bi$_2$ Sr$_2$ CaCu$_2$ O$_{8 + y}$ sample act as converging lens for vortices

We report on direct imaging of vortex matter nucleated in micron-sized Bi$_2$ Sr$_2$ CaCu$_2$ O$_{8 + y}$ superconducting samples that incidentally present a bridge structure. We find that when nucleating vortices in a field-cooling condition the deck of the bridge acts as a converging lens for vort...

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Veröffentlicht in:	Physica. C, Superconductivity Superconductivity, 2021-11, Vol.590
Hauptverfasser:	Puig, Joaquín, Cejas Bolecek, Néstor René, Aragón Sánchez, Jazmín, Dolz, Moira Inés, Konczykowski, Marcin, Fasano, Yanina
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed Matter Physics Superconductivity
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container_title	Physica. C, Superconductivity
container_volume	590
creator	Puig, Joaquín Cejas Bolecek, Néstor René Aragón Sánchez, Jazmín Dolz, Moira Inés Konczykowski, Marcin Fasano, Yanina
description	We report on direct imaging of vortex matter nucleated in micron-sized Bi$_2$ Sr$_2$ CaCu$_2$ O$_{8 + y}$ superconducting samples that incidentally present a bridge structure. We find that when nucleating vortices in a field-cooling condition the deck of the bridge acts as a converging lens for vortices. By means of Bitter decoration images allowing us to quantify the enhancement of vortex-vortex interaction energy per unit length in the deck of the bridge, we are able to estimate that the deck is thinner than ∼ 0.6 μm. We show that the structural properties of vortex matter nucleated in micron-sized thin samples are not significantly affected by sample-thickness variations of the order of half a micron, an important information for type-II superconductors-based mesoscopic technological devices.
doi_str_mv	10.1016/j.physc.2021.1353948
format	Article
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title	Bridge in micron-sized Bi$_2$ Sr$_2$ CaCu$_2$ O$_{8 + y}$ sample act as converging lens for vortices
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