Search
Now showing items 281-290 of 2110
Microcavity quantum-dot systems for non-equilibrium Bose-Einstein condensation
(2010)
We review the practical conditions required to achieve a non-equilibrium BEC
driven by quantum dynamics in a system comprising a microcavity field mode and a distribution
of localised two-level systems driven to a step-like ...
High spin polarization in epitaxial films of ferrimagnetic Mn3Ga
(2011)
Ferrimagnetic Mn3Ga exhibits a unique combination of low saturation magnetization (Ms=0.11 MA m−1) and high perpendicular anisotropy with a uniaxial anisotropy constant of Ku = 0.89 MJ m−3. Epitaxial c-axis films exhibit ...
The in-situ structural characterization of layered double hydroxide materials in catalytic and biological applications
(Trinity College Dublin. School of Physics. Discipline of Physics, 2019)
The overall aim of this PhD research is to understand the physical behaviours of layered double hydroxide (LDH) nanomaterials in applied environments. Two aspects of LDH-based applications were studied. Firstly, the thermal ...
Procedure for 3D atomic resolution reconstructions using atom-counting and a Bayesian genetic algorithm
(2021)
We introduce a Bayesian genetic algorithm for reconstructing atomic models of nanoparticles from
a single projection using Z-contrast imaging. The number of atoms in a projected atomic column
obtained from annular dark ...
Influence of topology on the phase transition of a ferromagnetic metal
(2023)
The topological ferromagnet CoS2 exhibits an anhysteretic, weakly first-order transition at the Curie temperature of 119.8 K with a tricritical point µ0Htcp at 0.034 T. Magnetic symmetry and the mixing of majority and ...
Printed Electronics from Solution-Processed 2D Materials
(Trinity College Dublin. School of Physics. Discipline of Physics, 2018)
The fervour created in the wake of the graphene gold-rush has fuelled investigative momentum over the last decade. The maturity of liquid-phase processing has meant that solution-processed layered crystals can be now be ...
Stability of Mn2RuxGa-based Multilayer Stacks, Gwenaël Atcheson, Katarzyna Siewierska, J. M. D. Coey, Karsten Rode, Plamen Stamenov
(2022)
Perpendicular heterostructures based on a ferrimagnetic Mn2RuxGa (MRG) layer and a ferromagnetic Co/Pt multilayer were examined to understand the effects of different spacer layers (V, Mo, Hf, HfOx and TiN) on the interfaces ...
High-throughput bandstructure simulations of van der Waals hetero-bilayers formed by 1T and 2H monolayers
(2021)
Vertically stacked van der Waals heterostructures made of two-dimensional compounds are almost an infinite playground for the fabrication of nano-engineered materials for the most diverse applications. Unfortunately, ...
Very low 1/f barrier noise in sputtered MgO magnetic tunnel junctions with high tunneling magnetoresistance
(2012)
Low frequency 1/f barrier noise has been investigated in sputtered MgO magnetic tunnel junctions(MTJs) with a tunnelingmagnetoresistance ratio of up to 330% at room temperature. The lowest normalized noise parameter ? of ...
Design of atomic force microscope cantilevers for combined thermomechanical writing and thermal reading in array operation
(IEEE, 2002)
In thermomechanical data writing, a resistively-heated atomic force microscope (AFM) cantilever tip forms indentations in a thin polymer film. The same cantilever operates as a thermal proximity sensor to detect the presence ...