Vortex Ratchet Effect in Superconductor Open Nanotubes and 3D Nanoflakes

verfasst von: Igor Bogush, Rodrigo Henrique de Bragança, Vladimir M. Fomin, Oleksandr V. Dobrovolskiy
Abstract: Superconductor 3D nanostructures represent new platforms for the exploration of physics of vortex matter and pave the way to novel applications and enhancement of nanosensors, bolometers, and quantum interferometers. Here, we consider two types of superconductor 3D nanostructures – open nanotubes and nanoflakes – carrying an azimuthal transport current in a homogeneous external magnetic field. The complex 3D geometry of the structures induces an inhomogeneity of the component of the magnetic field normal to the surface and makes the vortices move along preferred paths. By introducing a series of asymmetric pinning sites along these paths, we demonstrate nonreciprocity in the flux transport, which, in the 3D nanostructures, is stronger than in the planar membranes. The enhancement of the vortex ratchet effect manifests via a difference in the vortex depinning current under current reversal in a wider range of magnetic fields. The revealed effect is attributed to the inhomogeneous field-induced vortex channeling through the areas containing the asymmetric pinning sites. Our results demonstrate that the ratchet effect can persist up to higher magnetic fields via extending a superconducting film into the third dimension, without an increase in the number of asymmetric pinning sites.
Externe Organisation(en): Technische Universität Braunschweig
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden (IFW) e.V.
Universidade Federal de Pernambuco
Moldova State University
Typ: Artikel
Journal: Physica Status Solidi - Rapid Research Letters
ISSN: 1862-6254
Publikationsdatum: 05.06.2025
Publikationsstatus: Angenommen/Im Druck
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Allgemeine Materialwissenschaften, Physik der kondensierten Materie
Elektronische Version(en): https://doi.org/10.1002/pssr.202500139 (Zugang: Unbekannt)

BibTeX

@article{539cbc0b243e4a1ca25ee3e4eae0dfbe,
title = "Vortex Ratchet Effect in Superconductor Open Nanotubes and 3D Nanoflakes",
abstract = "Superconductor 3D nanostructures represent new platforms for the exploration of physics of vortex matter and pave the way to novel applications and enhancement of nanosensors, bolometers, and quantum interferometers. Here, we consider two types of superconductor 3D nanostructures – open nanotubes and nanoflakes – carrying an azimuthal transport current in a homogeneous external magnetic field. The complex 3D geometry of the structures induces an inhomogeneity of the component of the magnetic field normal to the surface and makes the vortices move along preferred paths. By introducing a series of asymmetric pinning sites along these paths, we demonstrate nonreciprocity in the flux transport, which, in the 3D nanostructures, is stronger than in the planar membranes. The enhancement of the vortex ratchet effect manifests via a difference in the vortex depinning current under current reversal in a wider range of magnetic fields. The revealed effect is attributed to the inhomogeneous field-induced vortex channeling through the areas containing the asymmetric pinning sites. Our results demonstrate that the ratchet effect can persist up to higher magnetic fields via extending a superconducting film into the third dimension, without an increase in the number of asymmetric pinning sites.",
keywords = "3D nanoarchitectures, pinning, superconductivity, vortex dynamics, vortex ratchet effect",
author = "Igor Bogush and {de Bragan{\c c}a}, {Rodrigo Henrique} and Fomin, {Vladimir M.} and Dobrovolskiy, {Oleksandr V.}",
note = "Publisher Copyright: {\textcopyright} 2025 The Author(s). physica status solidi (RRL) Rapid Research Letters published by Wiley-VCH GmbH.",
year = "2025",
month = jun,
day = "5",
doi = "10.1002/pssr.202500139",
language = "English",
journal = "Physica Status Solidi - Rapid Research Letters",
issn = "1862-6254",
publisher = "Wiley-VCH Verlag",
}