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The Magnetic Properties of Superconducting and Ferromagnetic Materials at the...
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The Magnetic Properties of Superconducting and Ferromagnetic Materials at the Nanoscale

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Physical Chemistry at Nanoscale".

Deadline for manuscript submissions: closed (20 February 2024) | Viewed by 1133

Special Issue Editor

Prof. Dr. Haifeng Zhang

E-Mail Website
Guest Editor
College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China
Interests: computational electromagnetics; plasma photonic crystal; plasma stealthy and electromagnetic properties of metamaterials

Special Issue Information

Dear Colleagues,

In numerous fields of science and technology, magnetism is a critical property. Several significant technologies have been developed based on the study of magnetic properties, such as electric motors, generators, and magnetic storage devices. This Special Issue examines the magnetic properties of superconducting materials and nanoscale ferromagnetic materials. At the nanoscale, these materials exhibit unique magnetic properties that differ from their macroscopic behavior. This is due to the influence of quantum mechanical effects, such as the tunneling of electrons and the Josephson effect, which occur at this scale. Understanding these properties has significant implications for developing advanced technologies, including spintronics and quantum computing. Its collection could broaden ideas of exploration for relevant researchers and pave the way for future research and communities.

Prof. Dr. Haifeng Zhang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • magnetic properties
  • superconducting materials
  • ferromagnetic materials
  • nanoscale

Published Papers (1 paper)

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Research

10 pages, 2648 KiB  
Article
Steering of Vortices by Magnetic Field Tilting in Open Superconductor Nanotubes
by Igor Bogush, Vladimir M. Fomin and Oleksandr V. Dobrovolskiy
Nanomaterials 2024, 14(5), 420; https://doi.org/10.3390/nano14050420 - 25 Feb 2024
Cited by 1 | Viewed by 947
Abstract
In planar superconductor thin films, the places of nucleation and arrangements of moving vortices are determined by structural defects. However, various applications of superconductors require reconfigurable steering of fluxons, which is hard to realize with geometrically predefined vortex pinning landscapes. Here, on the [...] Read more.
In planar superconductor thin films, the places of nucleation and arrangements of moving vortices are determined by structural defects. However, various applications of superconductors require reconfigurable steering of fluxons, which is hard to realize with geometrically predefined vortex pinning landscapes. Here, on the basis of the time-dependent Ginzburg–Landau equation, we present an approach for the steering of vortex chains and vortex jets in superconductor nanotubes containing a slit. The idea is based on the tilting of the magnetic field B at an angle α in the plane perpendicular to the axis of a nanotube carrying an azimuthal transport current. Namely, while at α=0∘, vortices move paraxially in opposite directions within each half-tube; an increase in α displaces the areas with the close-to-maximum normal component |Bn| to the close(opposite)-to-slit regions, giving rise to descending (ascending) branches in the induced-voltage frequency spectrum fU(α). At lower B values, upon reaching the critical angle αc, the close-to-slit vortex chains disappear, yielding fU of the nf1 type (n≥1: an integer; f1: the vortex nucleation frequency). At higher B values, fU is largely blurry because of multifurcations of vortex trajectories, leading to the coexistence of a vortex jet with two vortex chains at α=90∘. In addition to prospects for the tuning of GHz-frequency spectra and the steering of vortices as information bits, our findings lay the foundation for on-demand tuning of vortex arrangements in 3D superconductor membranes in tilted magnetic fields. Full article
(This article belongs to the Special Issue The Magnetic Properties of Superconducting and Ferromagnetic Materials at the Nanoscale)
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