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Now showing items 1401-1410 of 2111
Neutral excitation density-functional theory: an efficient and variational first-principles method for simulating neutral excitations in molecules.
(2020)
We introduce neutral excitation density-functional theory (XDFT), a computationally light, generally applicable, first-principles technique for calculating neutral electronic excitations. The concept is to generalise ...
Dynamic spin filtering at the Co/Alq<inf>3</inf> interface mediated by weakly coupled second layer molecules
(2016)
Spin filtering at organic-metal interfaces is often determined by the details of the interaction between the organic molecules and the inorganic magnets used as electrodes. Here we demonstrate a spin-filtering mechanism ...
Liquid phase exfoliation and dispersion of two dimensional materials
(Trinity College (Dublin, Ireland). School of Physics, 2014)
Over the last few years, it has become clear that due to their high surface area and novel properties, two dimensional materials will be extremely useful both for fundamental studies and for a range of applications. Previous ...
Boron nitride nanosheets as barrier enhancing fillers in melt processed composites
(2015)
In this work we have used melt-processing to mix liquid-exfoliated boron–nitride nanosheets with PET to produce composites for gas barrier applications. Sonication of h-BN powder, followed by centrifugation-based size-selection, ...
What can HST-GHRS Fe II observations of alpha Orionis (M2 Iab) tell us about short-period heating?
(EDP Sciences, 2001)
Cuntz (1997) suggested that apparent velocity shifts in Fe II emission lines observed in Betelgeuse
( Orionis: M2 Iab) indicate that non-magnetic wave modes are relevant for the heating and dynamics of
Ori's chromosphere. ...
Hysteresis Magnetoresistance and Micromagnetic Modeling of Ni Microbelts
(2010)
Magnetization reversal process in a single nickel microbelt is investigated by measuring magnetoresistance (MR). A hysteresis MR curve is observed, which consists of a reversible bell-shaped curve under high magnetic field ...
Increasing Spatial Fidelity and SNR of 4D-STEM using Multi-frame Data Fusion
(2021)
4D-STEM, in which the 2D diffraction plane is captured for each 2D scan position in the scanning transmission electron microscope
(STEM) using a pixelated detector, is complementing, and increasingly replacing existing ...
A fully compensated ferrimagnetic half metal Co1-xCrxS2 with Curie temperature above room temperature
(2023)
Fully compensated ferrimagnetic half metals have attracted great attention in spintronics. Unlike many previous calculations based on hypothetical ordered alloys, here we look for existing solid solution series taking as ...
Electron-hole excitations and optical spectra of rare gas solids
(Trinity College (Dublin, Ireland). School of Physics, 2004)
This thesis is a theoretical study of the optical and dielectric properties of semiconductors
and insulators. The quantity that defines the relationship between measurable optical
properties and electronic structure of ...
Yoke-shaped MgO-barrier magnetic tunnel junction sensors
(2012)
Yoke-shaped sensors based on MgO-barrier magnetic tunnel junctions have been designed, fabricated, and studied; they show a good linear tunneling magnetoresistance (TMR) response. A nearly-perpendicular configuration of ...