Percolating transport in superconducting nanoparticle films

Fostner, Shawn; Nande, Amol; Smith, A. J. S.; Gazoni, Rodrigo M.; Grigg, Jack; Temst, Kristiaan; Bael, M. J. Van; Brown, S. A.

doi:10.1063/1.5006694

Cited by 5 publications

(4 citation statements)

References 71 publications

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“…At lower currents, pulsed current measurements are consistent with the BKT and breakdown behaviour observed using DC currents. Detailed discussion of these measurements will be presented elsewhere [58].…”

Section: Critical Currentsmentioning

confidence: 99%

Quantum fluctuations in percolating superconductors: an evolution with effective dimensionality

et al. 2017

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We investigate percolating films of superconducting nanoparticles and observe an evolution from superconducting to metallic to insulating states as the surface coverage of the nanoparticles is decreased. We demonstrate that this evolution is correlated with a reduction in the effective/dominant dimensionality of the system, from 2D to 1D to 0D, and that the physics in each regime is dominated by vortices, phase slips and tunnelling respectively. Finally we construct phase diagrams that map the various observed states as a function of surface coverage (or, equivalently, normal state resistance), temperature and measurement current.

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Section: Critical Currentsmentioning

confidence: 99%

Quantum fluctuations in percolating superconductors: an evolution with effective dimensionality

et al. 2017

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“…The phenomenon of localised surface plasmon resonance (LSPR), giving rise to characteristic optical extinction and strong local electromagnetic field enhancement [165], is currently of significant practical interest for applications in sensing, detection and imaging, as well as for optical components and collar cell technologies stimulating the development of novel and sophisticated NP-based systems [166][167][168][169][170]. Controllable assembling of NPs into films or composites allows for conductivity tuning from the variable range hopping to metal-like charge transfer mechanisms opening a way for the fabrication of unique electronic and electro-mechanical devices [171][172][173][174][175]. The NP-filled materials are also of high interest for microwave technologies, bactericidal coatings and membranes, as well as for the formation of surfaces with controlled morphology, wettability and adhesion [176][177][178][179].…”

Section: Functional Nanoparticle-based Materialsmentioning

confidence: 99%

“…It was found that the percolation threshold ensuring the formation of conductive passes through the assembly can be shifted to very low surface coverages of NPs [215]. Controlling the coverage allows tuning the resistance of the assembled metal nanostructures [174]. This capability was used for the fabrication of passive electronic components (resistors and capacitors) by patterned cluster deposition on paper [61].…”

Section: Nps For Enhanced Sensing and Detectionmentioning

confidence: 99%

Gas-Phase Synthesis of Functional Nanomaterials

Popok

Kylián

2020

Applied Nano

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Nanoparticles (NPs) of different types, especially those of metals and metal oxides, are widely used in research and industry for a variety of applications utilising their unique physical and chemical properties. In this article, the focus is put on the fabrication of nanomaterials by means of gas-phase aggregation, also known as the cluster beam technique. A short overview of the history of cluster sources development emphasising the main milestones is presented followed by the description of different regimes of cluster-surface interaction, namely, soft-landing, pinning, sputtering and implantation. The key phenomena and effects for every regime are discussed. The review is continued by the sections describing applications of nanomaterials produced by gas aggregation. These parts critically analyse the pros and cons of the cluster beam approach for catalysis, formation of ferromagnetic and superparamagnetic NPs, applications in sensor and detection technologies as well as the synthesis of coatings and composite films containing NPs in research and industrial applications covering a number of different areas, such as electronics, tribology, biology and medicine. At the end, the current state of the knowledge on the synthesis of nanomaterials using gas aggregation is summarised and the strategies towards industrial applications are outlined.

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“…Network formation is not expected in inorganic materials because of the strength of the primary interactions and the depth of the equilibrium states (i.e., the existence of large energy barriers to reach the next available metastable state). Nevertheless, by significantly increasing the role of surface states, inorganic and metal oxide particles can also organize in networks with different geometries and connectivities. − However, controlling the relevant interactions here is challenging and these networks show a large degree of disorder.…”

Section: Introductionmentioning

confidence: 99%

Nanoscale Networks of Metal Oxides by Polymer Imprinting and Templating for Future Adaptable Electronics

Berg

Jonkman

Loos

et al. 2022

ACS Appl. Nano Mater.

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While network formation is prevalent in nature, networks are generally not expected in inorganic structures. Exceptions are those cases in which surface states become important, such as nanoparticles. However, even in these cases, the morphology of these networks is difficult to control and they show a large degree of disorder. In this work, we show that highly ordered and interconnected nanoscale networks of functional metal oxides can be fabricated by a combination of polymer imprinting and polymer templating through solution processable methods. We report the fabrication of a number of functional oxide networks (i.e., BiFeO 3 , SrTiO 3 , La 0.7 Ca 0.3 MnO 3 , and HfO 2 ) from solution, showing that all the oxide materials tried so far are able to follow the self-assembled network morphology dictated by the polymer structure. These networks were characterized for the overall structure by scanning electron microscopy and atomic force microscopy (AFM). Grazing incidence small angle X-ray scattering showed a good imprint quality on the mm 2 scale for the combined networks, which is challenging given that multiple processing steps were involved during the fabrication. The material stoichiometries were investigated by X-ray photoemission spectroscopy and the crystal phases by grazing incidence wide angle X-ray scattering. When electronic functionality is anticipated, the networks behave as expected: conducting AFM on the La 0.7 Ca 0.3 MnO 3 networks confirmed the conductive character of this composition; and piezoresponse force microscopy of the BiFeO 3 network is consistent with the presence of ferroelectric behavior. These nanoscale networks show promise for future applications in adaptable electronics, such as neuromorphic computing or brain-inspired information processing.

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Percolating transport in superconducting nanoparticle films

Cited by 5 publications

References 71 publications

Quantum fluctuations in percolating superconductors: an evolution with effective dimensionality

Quantum fluctuations in percolating superconductors: an evolution with effective dimensionality

Gas-Phase Synthesis of Functional Nanomaterials

Nanoscale Networks of Metal Oxides by Polymer Imprinting and Templating for Future Adaptable Electronics

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