Search
Now showing items 2021-2030 of 2111
Magnetism in dilute magnetic oxides and related materials
(Trinity College (Dublin, Ireland). School of Physics, 2007)
The work in this thesis is focussed on the magnetic properties of dilute ferromagnetic
semiconducting oxides and related materials. Since the first report of unexpected
room temperature ferromagnetism in anatase and rutile ...
LOFAR tied-array imaging and spectroscopy of solar radio bursts
(Trinity College (Dublin, Ireland). School of Physics, 2016)
The Sun is the source of the most powerful explosions in the solar system such as solar ares and coronal mass ejections (CMEs). These explosions can occur up to several times per day and they release up to 1032 ergs (1025 ...
Prediction of large bias-dependent magnetoresistance in al l-oxide magnetic tunnel junctions with a ferroelectric barrier
(2011)
All-oxide magnetic tunnel junctions (MTJs) incorporating functional materials as insulating barriers have the potential of becoming the founding technology for novel multifunctional devices. We investigate, by first-principles ...
First-principles investigation on the electronic efficiency and binding energy of the contacts formed by graphene and poly-aromatic hydrocarbon anchoring groups
(2015)
The electronic e
ffi
ciency and binding energy of contacts formed between graphene electrodes and
poly-aromatic hydrocarbon (PAH) anchoring groups have been investigated by the non-equilibrium
Green’s function formalism ...
Optical Anisotropy of SrTiO3(110) for Different Surface Terminations
(2017)
In this work we investigate the SrTiO3(110) surface by reflectance anisotropy spectroscopy (RAS) at varying preparation steps including ex situ wet etching, high temperature oxygen annealing, as well as in situ vacuum ...
Optical, thermal, and bit-writing analysis of a directly coupled plasmonic waveguide for heat-assisted magnetic recording
(2020)
We investigate the energy conversion process and subsequent thermal and bit-writing performance of a plasmonic near-field transducer (NFT) under steady-state operation within heat-assisted magnetic recording (HAMR) devices. ...
A variational pseudo-self-interaction correction approach: ab-initio description of correlated oxides and molecules
(2011)
We present a fully variational generalization of the pseudo self-interaction correction (VPSIC) approach previously presented in two implementations based on plane-waves and atomic orbital basis set, known as PSIC and ASIC, ...
Antiferromagnetic single-layer spin-orbit torque oscillators
(2019)
We show how a charge current through a single antiferromagnetic layer can excite and control self-oscillations. Sustained oscillations with tunable amplitudes and frequencies are possible in a variety of geometries using ...
Preparation of high concentration dispersions of exfoliated MoS 2 with increased flake size
(2012)
Solvent exfoliation of inorganic layered compounds is likely to be important for a range of applications. However, this method generally gives dispersions of small nanosheets at low concentrations. Here we describe methods, ...
Toroidal moments as indicator for magneto-electric coupling: the case of BiFeO3 versus FeTiO3
(2009)
In this paper we present an analysis of the magnetic toroidal moment and its relation to the various structural modes in R3c-distorted perovskites with magnetic cations on either the perovskite A or B site. We evaluate the ...