Results 231 to 240 of about 62,219 (286)
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Annual Review of Physical Chemistry, 1998
▪ Abstract Ordered arrays, or superlattices, of metallic, insulating, or semiconducting quantum dots, represent an exciting new class of materials. These superlattices are often referred to as artificial solids, in which the nanocrystals take the place of atoms in traditional solids, and the packing arrangement of the nanocrystals determines the unit
Collier, C. P. +2 more
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▪ Abstract Ordered arrays, or superlattices, of metallic, insulating, or semiconducting quantum dots, represent an exciting new class of materials. These superlattices are often referred to as artificial solids, in which the nanocrystals take the place of atoms in traditional solids, and the packing arrangement of the nanocrystals determines the unit
Collier, C. P. +2 more
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Journal of Vacuum Science and Technology, 1979
The MBE technique has made feasible the growth of periodic semiconductor structures composed of ultrathin layers with alternating p- and n-doping. This kind of superlattice, in contrast to familiar heterostructure systems, does not contain any interfaces, and, therefore, does not show the problems related to those. Doping superlattices, on the contrary,
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The MBE technique has made feasible the growth of periodic semiconductor structures composed of ultrathin layers with alternating p- and n-doping. This kind of superlattice, in contrast to familiar heterostructure systems, does not contain any interfaces, and, therefore, does not show the problems related to those. Doping superlattices, on the contrary,
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Nano Letters, 2023
Moiré superlattices from stacks of van der Waals materials offer an exciting arena in the fields of condensed matter physics and materials science. Typically, these moiré superlattices consist of materials with identical or similar structures, and the long moiré period arises from a small twist angle or lattice mismatch.
Yusen Ye +5 more
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Moiré superlattices from stacks of van der Waals materials offer an exciting arena in the fields of condensed matter physics and materials science. Typically, these moiré superlattices consist of materials with identical or similar structures, and the long moiré period arises from a small twist angle or lattice mismatch.
Yusen Ye +5 more
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Calculated superlattice and interface phonons of InAs/GaSb superlattices
Physical Review B, 1986The phonon spectrum of InAs/GaSb superlattices is calculated with a linear-chain model with interplanar force constants. Apart from confined and extended modes, as found also in GaAs/GaAlAs superlattices, this system shows new modes localized at the interface. These latter modes depend crucially on the nature (InSb or GaAs) of the interface and some of
A. Fasolino, MOLINARI, Elisa, J. C. Maan
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Structure and growth of crystalline superlattices: From monolayer to superlattice
Physical Review B, 1986We discuss the physical phenomena fundamental to the understanding of the structure and growth of crystalline superlattices: (i) the growth mode as determined by surface energies, supersaturation, and lattice misfit; and (ii) the dependence of epitaxial orientation on lattice matching, atomic bonding, and film thickness, in the topical case of epitaxy ...
, Bauer, , van der Merwe JH
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Electrodeposited Ceramic Superlattices
Science, 1990Ceramic superlattices have been produced by electrodeposition with modulation wavelengths in the range from 5 to 10 nanometers. The Tl a Pb b O c /Tl d Pb e O f superlattices were deposited from a ...
J A, Switzer, M J, Shane, R J, Phillips
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Green functions for superlattices
Physical Review B, 1985A Green-function investigation is made of the (complex) band structure and local density of states of superlattices composed of two alternating component crystals, which are modeled by means of the two-band nearly-free-electron approximation. The variation of different superlattice band structures with component-crystal thickness is studied in detail ...
, Barto, , Davison
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Cluster Superlattice Membranes
ACS Nano, 2020Cluster superlattice membranes consist of a two-dimensional hexagonal lattice of similar-sized nanoclusters sandwiched between single-crystal graphene and an amorphous carbon matrix. The fabrication process involves three main steps, the templated self-organization of a metal cluster superlattice on epitaxial graphene on Ir(111), conformal embedding in
Tobias Hartl +15 more
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ACS Applied Materials & Interfaces, 2015
We studied experimentally and theoretically the direction-dependent elastic and electromagnetic wave propagation in a supported film of hybrid PMMA (poly[methyl-methacrylate])-TiO2 superlattice (SL). In the direction normal to the layers, this one-dimensional periodic structure opens propagation band gaps for both hypersonic (GHz) phonons and near-UV ...
Alonso-Redondo, E. +6 more
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We studied experimentally and theoretically the direction-dependent elastic and electromagnetic wave propagation in a supported film of hybrid PMMA (poly[methyl-methacrylate])-TiO2 superlattice (SL). In the direction normal to the layers, this one-dimensional periodic structure opens propagation band gaps for both hypersonic (GHz) phonons and near-UV ...
Alonso-Redondo, E. +6 more
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Static correlations in superlattices
Physical Review B, 1991A l'aide d'un modele heterogene, qui prend en compte la largeur finie des couches de charge, on presente une etude des processus intra et inter-sous-bandes. Tandis qu'une restriction de quelques sous-bandes peut decrire d'autres effets, des contributions d'autres niveaux sont necessaires pour simuler des correlations ...
, Schweng, , Miesenböck
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