Physics (Scholarly Publications): Recent submissions
Now showing items 341-360 of 1742
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Near-field relaxation of a quantum emitter to 2D semiconductors: surface dissipation and exciton polaritons
(2016)The total spontaneous emission rate of a quantum emitter in the presence of an infinite MoS2 monolayer is enhanced by several orders of magnitude, compared to its free-space value, due to the excitation of surface exciton ... -
There are many ways to spin a photon: Half-quantization of a total optical angular momentum
(2016)The angular momentum of light plays an important role in many areas, from optical trapping to quantum information. In the usual three-dimensional setting, the angular momentum quantum numbers of the photon are integers, ... -
Nitrogen grain-boundary passivation of In-doped ZnO transparent conducting oxide
(2018)We have investigated the properties and conduction limitations of spray pyrolysis grown, low-cost transparent conducting oxide ZnO thin films doped with indium. We analyze the optical, electrical, and crystallographic ... -
Production and processing of graphene and related materials
(IOP Publishing, 2020)We present an overview of the main techniques for production and processing of graphene and related materials (GRMs), as well as the key characterization procedures. We adopt a ‘hands-on’ approach, providing practical ... -
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 ... -
Can soap films be used as models for mortality studies?
(2018)We report studies of the life expectancy of sets of parallel liquid films made from surfactant solution and contained in cylindrical perspex tubes. The tubes are sealed at the bottom and vertically placed. From our analysis ... -
Public Lighting Recommendations
(Dark Sky Ireland, 2019)Public lighting accounts for €56 million in public expenditure annually and is a major item in council budgets. A large proportion of the 480,000 units in the lighting stock are in need of replacement with more efficient ... -
Ultrahigh conductivity in Weyl semimetal NbAs nanobelts
(2019)In two-dimensional (2D) systems, high mobility is typically achieved in low-carrier-density semiconductors and semimetals. Here, we discover that the nanobelts of Weyl semimetal NbAs maintain a high mobility even in the ... -
First-Principles Prediction of a Room-Temperature Ferromagnetic Janus VSSe Monolayer with Piezoelectricity, Ferroelasticity, and Large Valley Polarization
(2019)Inspired by recent experiments on the successful fabrication of monolayer Janus transition-metal dichalcogenides [Lu, A.-Y.; Nat. Nanotechnol. 2017, 12, (8), 744 and ferromagnetic VSe2 [Bonilla, M.; Nat. Nanotechnol. 2018, ... -
Enhancing the electronic dimensionality of hybrid organic-inorganic frameworks by hydrogen bonded molecular cations
(2019)Transition-metal oxides with pyroxene structure, such as alkali-metal metavanadates, are known for their good chemical stability and have been used accordingly in many applications. In this work, we explore the possibility ... -
Interlayer dielectric function of a type-II van der Waals semiconductor: The HfS2/PtS2 heterobilayer
(American Physical Society (APS), 2019)Heterogeneous stacks of two-dimensional transition-metal dichalcogenides can be arranged so as to have a type-II band alignment, where the valence band maximum and the conduction band minimum are located on different layers. ... -
How do phonons relax molecular spins?
(American Association for the Advancement of Science (AAAS), 2019)The coupling between electronic spins and lattice vibrations is fundamental for driving relaxation in magnetic materials. The debate over the nature of spin-phonon coupling dates back to the 1940s, but the role of spin-spin, ... -
Predicting the Curie temperature of ferromagnets using machine learning
(American Physical Society (APS), 2019)The magnetic properties of a material are determined by a subtle balance between the various interactions at play, a fact that makes the design of new magnets a daunting task. High-throughput electronic structure theory ... -
A unified picture of the covalent bond within quantum-accurate force fields: From organic molecules to metallic complexes? reactivity
(American Association for the Advancement of Science (AAAS), 2019)Computational studies of chemical processes taking place over extended size and time scales are inaccessible by electronic structure theories and can be tackled only by atomistic models such as force fields. These have ... -
Role of longitudinal fluctuations in L10 FePt
(American Physical Society (APS), 2019)L10 FePt is a technologically important material for a range of novel data storage applications. In the ordered FePt structure the normally nonmagnetic Pt ion acquires a magnetic moment, which depends on the local field ... -
Electronic spin-spin decoherence contribution in molecular qubits by quantum unitary spin dynamics
(Elsevier BV, 2019)The realisation of quantum computers based on molecular electronic spins requires the design of qubits with very long coherence times, . Dephasing can proceed over several different microscopic pathways, active at the same ... -
Self-Assembly of Atomically Thin Chiral Copper Heterostructures Templated by Black Phosphorus
(2019)The fabrication of 2D systems for electronic devices is not straightforward, with top‐down low‐yield methods often employed leading to irregular nanostructures and lower quality devices. Here, a simple and reproducible ... -
Silver Tarnishing Mechanism Revealed by Molecular Dynamics Simulations
(2019)The mechanism of silver-oxygen and silver-sulphur reactions is revealed by means of molecular dynamics simulations, performed with reactive force fields purposely built and extensively tested against quantum chemical ... -
Impurity band magnetism in organic semiconductors
(2019)Recent experiments and theoretical studies have proposed that spin-transport in organic semiconductors, in particular in Alq3, may occur in an impurity band. Here we model the electronic and magnetic properties of such ...
