Results 81 to 90 of about 183,615 (274)

Absence of superconductivity in bulk Nd1−x Sr x NiO2

open access: yesCommunications Materials, 2020
Superconductivity was recently observed in Nd0.8Sr0.2NiO2 films. Here, superconductivity is found to be absent in bulk polycrystalline samples of Sr-doped NdNiO2, raising questions regarding the origin of superconductivity in this material.
Qing Li   +5 more
doaj   +1 more source

Superconductors with Topological Order and their Realization in Josephson Junction Arrays [PDF]

open access: yes, 2007
We will describe a new superconductivity mechanism, proposed by the authors in [1], which is based on a topologically ordered ground state rather than on the usual Landau mechanism of spontaneous symmetry breaking.
Diamantini, M. C.   +2 more
core   +1 more source

Plasmonic Hot Spots on Topological Insulator Nanotips for Enhancing Light Interaction with MoS2 Atomic Monolayer [invited]

open access: yesAdvanced Photonics Research, EarlyView.
A pair of Sb2Te3 topological insulator (TI) nanotips is fabricated by using the focused ion beam lithography to demonstrate the plasmonic hot spot effect at the visible range. The strong enhancement of electric field can be generated on the TI nanotips due to the plasmonic effect, giving rise to the obvious improvement of photoluminescence emission ...
Yiqiao Zhang   +5 more
wiley   +1 more source

Josephson-coupled superconducting regions embedded at the interfaces of highly oriented pyrolytic graphite

open access: yesNew Journal of Physics, 2013
Transport properties of a few hundreds of nanometers thick (in the graphene plane direction) lamellae of highly oriented pyrolytic graphite (HOPG) have been investigated.
A Ballestar   +3 more
doaj   +1 more source

Direct Phasing of Protein Crystals with Non-Crystallographic Symmetry

open access: yesCrystals, 2019
An iterative projection algorithm proposed previously for direct phasing of high-solvent-content protein crystals is extended to include non-crystallographic symmetry (NCS) averaging.
Hongxing He, Mengchao Jiang, Wu-Pei Su
doaj   +1 more source

Cryo‐Exfoliation Synthesis of Borophene and its Application in Wearable Electronics

open access: yesAdvanced Science, EarlyView.
This article introduces a novel cryo‐exfoliation method for synthesizing borophene, utilizing rapid quenching with liquid nitrogen and mild sonication to achieve scalable, high‐purity nanosheets. The study explores advanced characterizations, molecular dynamics simulations, and borophene‐based nanocomposites for wearable electronics, demonstrating its ...
Zhixuan Li   +6 more
wiley   +1 more source

The Impact of Superconducting Properties of Micron-Scale Masked Proton Irradiation on BaTiO3-Doped YBCO Film

open access: yesQuantum Beam Science
This study investigates the effects of 60 keV proton irradiation on BaTiO3-doped YBa2Cu3O7−δ (YBCO) films using masks with micron-scale holes to create controlled defect patterns aimed at enhancing superconducting properties.
Di Chen   +4 more
doaj   +1 more source

Fabrication and characterization of superconducting MgB2 thin film on graphene

open access: yesAIP Advances, 2018
The building of superconductor/graphene hybrid structure has attracted a lot of attention in recent years as it provides an exciting platform to study the novel superconducting proximity effect in graphene and has promise in potential device applications.
Shu-Han Cheng   +5 more
doaj   +1 more source

Design Optimization of a Permanent-Magnet Saturated-Core Fault-Current Limiter

open access: yesEnergies, 2019
Designs of saturated-cores fault current limiters (FCLs) usually implement conducting or superconducting DC coils serving to saturate the magnetic cores during nominal grid performance.
John Linden   +4 more
doaj   +1 more source

Anomalous Glassy Thermal Conductivity in a Perovskite Bismuthate Induced by Structural Dynamic Instability

open access: yesAdvanced Science, EarlyView.
Unraveling the underlying mechanisms at the origin of ultra‐low thermal conductivity in pristine crystals is of central relevance to designing new functional materials. Single crystals of the candidate functional material BaBiO3 show an anomalous glassy thermal conductivity, which reveals the role of strong anharmonicity and additional scattering ...
Alexandre Henriques   +6 more
wiley   +1 more source

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