Special Issue "Superconductivity in Nanoscaled Systems"

A special issue of Nanomaterials (ISSN 2079-4991).

Deadline for manuscript submissions: 31 May 2020.

Special Issue Editor

Dr. Evgueni F. Talantsev
Website1 Website2
Guest Editor
1 M.N. Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 18, S. Kovalevskoy St., Ekaterinburg, 620108, Russia
2 NANOTECH Centre, Ural Federal University, 19 Mira St., Ekaterinburg, 620002, Russia
Interests: fundamentals of conventional and unconventional superconductivity; hydrogen-rich superconductors; 2D intrinsic and proximity-induced superconductivity; nanoscaled ferroelectric materials; shock-wave phsyics and applications; practical iron-based and cuprate superconductors

Special Issue Information

Dear Colleagues,                

Within the last five years, experimental discoveries of intrinsic superconductivity in high-entropy alloys, highly-compressed hydrides, quasicrystals, approximant crystals, few layer stanene, and magic-angle twisted Dirac-cone materials have heralded a new era in this nearly 110-year-old field of science and technology. All these discoveries are associated with newly created/developed nanomaterials. This Special Issue aims to cover the latest aspects of these discoveries encompassing their fundamental understanding, basic properties, synthesis and fabrication routes, device methods, first-principles calculations, and other related topics. The format of welcomed articles includes full papers, communications, and reviews. Potential topics include but are not limited to:  

  1. First-principles exploration of hydrogen-rich superconductors;
  2. Experimental discoveries in highly-compressed hydrides;
  3. Superconductivity in magic-angles twisted 2D nanosheets;
  4. Experimental and theoretical studies of high-entropy alloys superconductors;
  5. Theory and experiment in superconducting quasicrystals and approximant crystals;
  6. Enhanced superconductivity in 2D and 1D limits;
  7. Hybrids nanoscaled ferroelectric/superconducting nanoscaled systems.

Dr. Evgueni F. Talantsev
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 papers will be 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 monthly 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 2000 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

  • Magic-angle twisted 2D nanosheets
  • Hydrogen-rich superconductors
  • High-entropy alloys
  • Superconductivity in quasicrystals and approximant crystals
  • Enhanced superconductivity in 2D and 1D limits
  • Proximity-induced superconductivity in nanoscaled systems

Published Papers (3 papers)

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Research

Open AccessArticle
Enhancement of Superconductivity by Amorphizing Molybdenum Silicide Films Using a Focused Ion Beam
Nanomaterials 2020, 10(5), 950; https://doi.org/10.3390/nano10050950 - 16 May 2020
Abstract
We have used focused ion beam irradiation to progressively cause defects in annealed molybdenum silicide thin films. Without the treatment, the films are superconducting with critical temperature of about 1 K. We observe that both resistivity and critical temperature increase as the ion [...] Read more.
We have used focused ion beam irradiation to progressively cause defects in annealed molybdenum silicide thin films. Without the treatment, the films are superconducting with critical temperature of about 1 K. We observe that both resistivity and critical temperature increase as the ion dose is increased. For resistivity, the increase is almost linear, whereas critical temperature changes abruptly at the smallest doses and then remains almost constant at 4 K. We believe that our results originate from amorphization of the polycrystalline molybdenum silicide films. Full article
(This article belongs to the Special Issue Superconductivity in Nanoscaled Systems)
Open AccessArticle
Induced Topological Superconductivity in a BiSbTeSe2-Based Josephson Junction
Nanomaterials 2020, 10(4), 794; https://doi.org/10.3390/nano10040794 - 21 Apr 2020
Abstract
A 4π-periodic supercurrent through a Josephson junction can be a consequence of the presence of Majorana bound states. A systematic study of the radio frequency response for several temperatures and frequencies yields a concrete protocol for examining the 4π-periodic [...] Read more.
A 4 π -periodic supercurrent through a Josephson junction can be a consequence of the presence of Majorana bound states. A systematic study of the radio frequency response for several temperatures and frequencies yields a concrete protocol for examining the 4 π -periodic contribution to the supercurrent. This work also reports the observation of a 4 π -periodic contribution to the supercurrent in BiSbTeSe 2 -based Josephson junctions. As a response to irradiation by radio frequency waves, the junctions showed an absence of the first Shapiro step. At high irradiation power, a qualitative correspondence to a model including a 4 π -periodic component to the supercurrent is found. Full article
(This article belongs to the Special Issue Superconductivity in Nanoscaled Systems)
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Open AccessArticle
DC Self-Field Critical Current in Superconductor/Dirac-Cone Material/Superconductor Junctions
Nanomaterials 2019, 9(11), 1554; https://doi.org/10.3390/nano9111554 - 01 Nov 2019
Cited by 1
Abstract
Recently, several research groups have reported on anomalous enhancement of the self-field critical currents, Ic(sf,T), at low temperatures in superconductor/Dirac-cone material/superconductor (S/DCM/S) junctions. Some papers attributed the enhancement to the low-energy Andreev bound states arising from winding of the [...] Read more.
Recently, several research groups have reported on anomalous enhancement of the self-field critical currents, Ic(sf,T), at low temperatures in superconductor/Dirac-cone material/superconductor (S/DCM/S) junctions. Some papers attributed the enhancement to the low-energy Andreev bound states arising from winding of the electronic wave function around DCM. In this paper, Ic(sf,T) in S/DCM/S junctions have been analyzed by two approaches: modified Ambegaokar-Baratoff and ballistic Titov-Beenakker models. It is shown that the ballistic model, which is traditionally considered to be a basic model to describe Ic(sf,T) in S/DCM/S junctions, is an inadequate tool to analyze experimental data from these type of junctions, while Ambegaokar-Baratoff model, which is generally considered to be a model for Ic(sf,T) in superconductor/insulator/superconductor junctions, provides good experimental data description. Thus, there is a need to develop a new model for self-field critical currents in S/DCM/S systems. Full article
(This article belongs to the Special Issue Superconductivity in Nanoscaled Systems)
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