School of Physics: Recent submissions
Now showing items 61-80 of 2200
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Quantum thermodynamics of driven-dissipative condensates
(2024)Polariton condensates occur away from thermal equilibrium, in an open system where heat and particles are continually exchanged with reservoirs. These phenomena have been extensively analyzed in terms of kinetic equations. ... -
Synchronization and spacetime vortices in one-dimensional driven-dissipative condensates and coupled oscillator models
(2023)Driven-dissipative condensates, such as those formed from polaritons, expose how the coherence of Bose-Einstein condensates evolves far from equilibrium. We consider the phase and frequency ordering in the steady-states ... -
Unifying methods for optimal control in non-Markovian quantum systems via process tensors
(2024)The large dimensionality of environments is the limiting factor in applying optimal control to open quantum systems beyond the Markovian approximation. Various methods exist to simulate non-Markovian systems, which ... -
Sulfide Nanomaterials for Lithium- and Sodium-Ion Battery Electrodes
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)The escalating climate crisis demands an urgent shift from fossil fuels to renewable energy sources such as wind and solar power, to reduce carbon emissions and mitigate global warming. However, the intermittent nature of ... -
Static and Dynamic Characterisation of Exchange-Biased Mutlilayers for Magnetic Sensor Applications
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)The coupling of ferromagnetic and antiferromagnetic materials through exchange-bias has been one of the key interactions in producing magnetic sensing and memory technology since soon after the discovery of the GMR and TMR ... -
OQuPy: A Python package to efficiently simulate non-Markovian open quantum systems with process tensors
(2024)Non-Markovian dynamics arising from the strong coupling of a system to a structured environment is essential in many applications of quantum mechanics and emerging technologies. Deriving an accurate description of general ... -
Revisiting the bonding evolution theory: a fresh perspective on the ammonia pyramidal inversion and bond dissociations in ethane and borazane
(2023)This work offers a comprehensive and fresh perspective on the bonding evolution theory (BET) frame- work, originally proposed by Silvi and collaborators [X. Krokidis, S. Noury and B. Silvi, Characterization of elementary ... -
Understanding the diversity of Type Ia supernovae from early to late times
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Type Ia Supernovae (SNe Ia) have been pivotal in the formation of the 21st Century view of the universe due to their involvement in the discovery of the accelerated expansion of the universe. However, an all-encompassing ... -
Fabrication and electromagnetic properties of metallic nano-helices
(Trinity College (Dublin, Ireland). School of Physics, 2014)Helically-shaped sytems are widely known in physics, biology or chemistry. Examples are some types of carbon nanotubes, DNA and collagen (double and triple helices, respectively), lipid bilayers, bacterial flagella (Salmonella ... -
Improved Efficiency and Longevity of Solar PV Systems Through Enhanced Passive Convection
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Solar PV technology is growing rapidly and becoming a crucial part of international and national energy infrastructure. Current commercially sold Si solar PV (Photovoltaic) panels, with ~21% efficiency and a projected ... -
Optimisation of non-Markovian systems using tensor networks
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Structured environments that do not admit simple time-local descriptions display a wealth of features which are otherwise absent from unstructured environments. Here we use optimal control to learn how to perform quantum ... -
The Magnetic, Magneto-transport and Magneto-optical Properties of Mn4-xGaxN Thin Films
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Thin film Mn4N has recently gained a lot of attention for possible use in spintronic applications, owing to its perpendicular magnetic anisotropy (PMA), low saturation magnetisation and large anomalous Hall effect (AHE). ... -
Investigation of Polymer-based Responsive Photonic Structures Fabricated by Two Photon Polymerisation
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)In this thesis, various 2D and 3D submicron polymer-based photonic structures are investigated for structural colour generation. 2D diffractive gratings have been designed and theoretically investigated by using ... -
On the Notation of Catastrophes in the Framework of Bonding Evolution Theory: Case of Normal and Inverse Electron Demand Diels-Alder Reactions
(2022)This paper generalizes very recent and unexpected findings [J. Phys. Chem. A, 2021, 125, 5152–5165] regarding the known “direct- and inverse-electron demand” Diels-Alder mechanisms. Application of bonding evolution theory ... -
Ab initio comparison of spin-transport properties in MgO-spaced ferrimagnetic tunnel junctions based on Mn3Ga and Mn3Al
(2023)We report on first-principles spin-polarised quantum transport calculations (from NEGF + DFT) in MgO-spaced magnetic tunnel junctions (MTJs) based on two different Mn-based Heusler ferrimagnetic metals, namely Mn3Al and ... -
The topological soliton in Peierls semimetal Sb
(2024)Sb is a three-dimensional Peierls insulator. The Peierls instability gives rise to doubling of the translational period along the [111] direction and alternating van der Waals and covalent bonding between (111) atomic ... -
High-performance p-type V2O3 films by spray pyrolysis for transparent conducting oxide applications
(2024)High-quality epitaxial p-type V2O3 thin films have been synthesized by spray pyrolysis. The films exhibited excellent electrical performance, with measurable mobility and high carrier concentration. The conductivity of the ... -
Miniaturized spectrometer with intrinsic long-term image memory
(2024)Miniaturized spectrometers have great potential for use in portable optoelectronics and wearable sensors. However, current strategies for miniaturization rely on von Neumann architectures, which separate the spectral ... -
Accelerating Nature: Induced Atomic Order in Equiatomic FeNi
(2024)The production of locally atomically ordered FeNi (known by its meteoric mineral name, tetrataenite) is confirmed in bulk samples by simultaneous conversion X-ray and backscattered γ-ray 57Fe Mössbauer spectroscopy. Up to ... -
Phonon and Magnon Jets above the Critical Current in Nanowires with Planar Domain Walls
(2023)We show through nonequilibrium nonadiabatic electron-spin-lattice simulations that above a critical current in magnetic atomic wires with a narrow domain wall (DW), a couple of atomic spaces in width, the electron flow ...
