Journal ArticleDOI
Low-Voltage Electron Transport in Self-Assembled Nanocrystal Arrays
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TLDR
In this paper, low-temperature measurements of two-dimensional self-assembled superlattices composed of 10 nanometer diameter cobalt nanocrystals, with 2 nm inter-nanocrystal spacing, were discussed.Abstract:
Electrons traverse two-dimensional nanocrystal arrays by sequential tunneling between neighboring nanocrystals. Analysis of array conductance at zero bias-voltage gives information about underlying nanocrystal uniformity, as well as the relevant single-electron charging energy. We discuss low-temperature measurements of two-dimensional self-assembled superlattices composed of 10 nanometer diameter cobalt nanocrystals, with ~2 nm inter-nanocrystal spacing.read more
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Preparation and Electrical Properties of Cobalt−Platinum Nanoparticle Monolayers Deposited by the Langmuir−Blodgett Technique
Vesna Aleksandrovic,Denis Greshnykh,Igor Randjelovic,Andreas Frömsdorf,Andreas Kornowski,Stephan V. Roth,Christian Klinke,Horst Weller +7 more
TL;DR: The Langmuir-Blodgett technique was utilized and optimized to produce closed monolayers of cobalt-platinum nanoparticles over vast areas and it is shown that sample preparation, "dipping angle", and subphase type have a strong impact on the quality of the produced films.
Journal ArticleDOI
Preparation and electrical properties of cobalt-platinum nanoparticle monolayers deposited by the Langmuir-Blodgett technique
Vesna Aleksandrovic,Denis Greshnykh,Igor Randjelovic,Andreas Frömsdorf,Andreas Kornowski,Stephan V. Roth,Christian Klinke,Horst Weller +7 more
TL;DR: In this paper, the Langmuir-Blodgett technique was utilized and optimized to produce closed monolayers of cobalt-platinum nanoparticles over vast areas, and the achieved films were characterized by scanning electron microscopy (SEM) and grazing incidence x-ray scattering (GISAXS).
Journal ArticleDOI
Analysis of charge transport in arrays of 28 kDa nanocrystal gold molecules
Aidan J. Quinn,Matteo Biancardo,Matteo Biancardo,Liam Floyd,Maura Belloni,Peter R. Ashton,Jon A. Preece,Carlo Alberto Bignozzi,Gareth Redmond +8 more
TL;DR: In this paper, the authors studied 28 kDa nanocrystal gold molecules and found that they behave as weakly-coupled molecular solids comprising discrete nanoscale metallic islands separated by insulating ligand barriers.
References
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Journal ArticleDOI
Structural and electrical properties of granular metal films
TL;DR: In this article, the transition from the metallic regime to the dielectric regime (10−50 A size isolated metal particles in an insulator continuum) is associated with the breaking up of a metal, where the volume fraction of metal, x, was varied from x = 1 to x = 0.05.
Journal ArticleDOI
Hopping Conductivity in Granular Metals
Ping Sheng,B. Abeles,Y. Arie +2 more
TL;DR: In this paper, it was shown that the observed temperature dependence of low-field conductivity in granular metals can be attributed to a relationship between the separation of neighboring metal grains and the electrostatic energy required to create a positive-negative charged pair of grains.
Journal ArticleDOI
Electrical Conduction Mechanism in Ultrathin, Evaporated Metal Films
C. A. Neugebauer,M. B. Webb +1 more
TL;DR: In this paper, the authors investigated the electrical conduction mechanism in the film plane of ultrathin, evaporated metal films and showed that the conductivity depends exponentially on reciprocal temperature, and it should be independent of field at low fields.
Journal ArticleDOI
Spin-Dependent Tunneling in Self-Assembled Cobalt-Nanocrystal Superlattices
TL;DR: Self-assembled devices composed of periodic arrays of 10-nanometer-diameter cobalt nanocrystals display spin-dependent electron transport and low-energy spin-flip scattering suppresses magnetoresistance with increasing temperature and bias-voltage.