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Now showing items 941-950 of 2111
Influence of growth and annealing conditions on low-frequency magnetic 1/f noise in MgO magnetic tunnel junctions
(2012)
Magnetic 1/fnoise is compared in magnetic tunnel junctions with electron-beam evaporated and sputtered MgO tunnel barriers in the annealing temperature range 350 - 425??C. The variation of the magnetic noise parameter (? ...
Atomistic models and time-dependent simulations of spin dynamics in isolated and current-carrying systems
(Trinity College (Dublin, Ireland). School of Physics, 2012)
Understanding and ultimately controlling the dynamics of electrons and their spins is an important aspect of spin-based electronics. Recent experimental advances open up new possibilities for probing spin dynamics with ...
Time-dependent electron transport through a strongly correlated quantum dot: multiple-probe open-boundary conditions approach
(2013)
We present a time-dependent study of electron transport through a strongly correlated quantum dot. The time-dependent current is obtained with the multiple-probe battery method, while adiabatic lattice density functional ...
Influence of electromigration field on the step bunching process on Si(111)
(2010)
We managed to isolate the effects of electromigration in the dynamics of the step bunching process on the vicinal Si(111) surface. Unlike in conventional experiments, we conducted the annealing of Si(111) in a specially ...
Theoretical study of topological insulators : models and materials
(Trinity College (Dublin, Ireland). School of Physics, 2014)
Topological insulators are a fascinating new class of materials, which have signalled a revival in exploration of topological aspects of condensecl matter physics. Like usual insulators they have an energy gap separating ...
Photoconductivity of solution-processed MoS2 films
(2013)
Solution-exfoliated MoS2 nano-platelets were formed into thin films by deposition onto a water surface followed by transfer to indium tin oxide coated glass. After drying, a gold electrode was evaporated on top to give a ...
Magnesium, nitrogen codoped Cr2O3: A p-type transparent conducting oxide
(2011)
A p-type transparent conductive oxide (TCO) was synthesised by codoping of poorly conducting chromium oxide (Cr2O3) with magnesium and nitrogen. We demonstrated that the codoping produced a TCO with good figure of merit ...
Optical Characterisation of Metallic and Biological Nanoparticles
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)
Nanotechnology is a rapidly growing technology with applications that affect many
industries in the global economy. Two such industries are optoelectronics and
healthcare.
With the increased demand for smaller, more ...
Deformation and fracture of crystalline tungsten and fabrication of composite STM probes
(2020)
Fracturing microscale constrictions in metallic wires, such as tungsten, platinum, or platinum-iridium, is a common fabrication method used to produce atomically sharp tips for scanning tunneling microscopy (STM), ...
Polymer crystallisation of a reinforcement mechanism for polymer-carbon nanotube composites
(Trinity College (Dublin, Ireland). School of Physics, 2005)
Two semi-crystalline polymers, poly(mphenylenevinylene-co-2,5-dioctyloxy-p-phenylenevinylene) (PmPV) and poly(vinyl alcohol) (PVOH), have been doped with carbon nanotubes. In the case of PmPV, well-graphitised arc discharge ...