Results 91 to 100 of about 3,153,465 (296)

Influence of electric field at electron energy spectrum in cylindrical quantum wire with two quantum dots [PDF]

open access: yes, 2007
The energy spectrum of electron is investigated in complicated nanoheterosystem consisting of two cylindrical semiconductor quantum dots placed into semiconductor quantum wire.
Gryschyк А. М.   +2 more
core   +1 more source

Transport regimes of a split gate superconducting quantum point contact in the two-dimensional LaAlO3/SrTiO3 superfluid

open access: yesNature Communications, 2018
Quantum transport in superconductors remains difficult to study due to the typically small Fermi wavelength. Here, Thierschmann et al. demonstrate a superconducting quantum point contact with split gate technology at the superconducting LaAlO3/SrTiO3 ...
Holger Thierschmann   +5 more
doaj   +1 more source

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

open access: yesAdvanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu   +13 more
wiley   +1 more source

Thermally activated charge fluctuations in GaAs double quantum dots [PDF]

open access: yes, 2014
In this thesis, laterally defined GaAs quantum dots and double quantum dots are investigated by means of real-time charge sensing. A quantum dot charge sensor, adjacent to the investigated double dot system, detects single electron tunneling with ...
Biesinger, Daniel Erich Fridolin
core   +1 more source

Focus on quantum efficiency

open access: yesNew Journal of Physics, 2014
Technologies which convert light into energy, and vice versa, rely on complex, microscopic transport processes in the condensed phase, which obey the laws of quantum mechanics, but hitherto lack systematic analysis and modeling.
Andreas Buchleitner   +6 more
doaj   +1 more source

Enhanced thermoelectric properties in boron nitride quantum-dot

open access: yesResults in Physics, 2017
We have investigated the ballistic thermoelectric properties in boron nitride quantum dots by using the nonequilibrium Green’s function approach and the Landauer transport theory.
Changning Pan, Mengqiu Long, Jun He
doaj   +1 more source

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

open access: yesAdvanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa   +19 more
wiley   +1 more source

Coulomb dominated cavities in bilayer graphene

open access: yesPhysical Review Research, 2020
Electrostatic confinement in bilayer graphene van der Waals heterostructures provides a versatile platform for studying electronic transport in bilayer graphene nanostructures.
Marius Eich   +9 more
doaj   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

open access: yesAdvanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner   +14 more
wiley   +1 more source

Rabi transport and the other finite-size effects in one-dimensional discrete-time topological quantum walk

open access: yesNew Journal of Physics
This paper investigates Rabi transport and finite-size effects in one-dimensional discrete-time topological quantum walks. We demonstrate the emergence of localized states at boundaries between topologically distinct phases and analyze how finite system ...
Andrzej Grudka   +5 more
doaj   +1 more source

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