Details
| Original language | English |
|---|---|
| Journal | Physica Status Solidi - Rapid Research Letters |
| Publication status | Accepted/In press - 5 Jun 2025 |
| Externally published | Yes |
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
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physica Status Solidi - Rapid Research Letters, 05.06.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Vortex Ratchet Effect in Superconductor Open Nanotubes and 3D Nanoflakes
AU - Bogush, Igor
AU - de Bragança, Rodrigo Henrique
AU - Fomin, Vladimir M.
AU - Dobrovolskiy, Oleksandr V.
N1 - Publisher Copyright: © 2025 The Author(s). physica status solidi (RRL) Rapid Research Letters published by Wiley-VCH GmbH.
PY - 2025/6/5
Y1 - 2025/6/5
N2 - 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.
AB - 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.
KW - 3D nanoarchitectures
KW - pinning
KW - superconductivity
KW - vortex dynamics
KW - vortex ratchet effect
UR - http://www.scopus.com/inward/record.url?scp=105006888645&partnerID=8YFLogxK
U2 - 10.1002/pssr.202500139
DO - 10.1002/pssr.202500139
M3 - Article
AN - SCOPUS:105006888645
JO - Physica Status Solidi - Rapid Research Letters
JF - Physica Status Solidi - Rapid Research Letters
SN - 1862-6254
ER -