School of Physics: Recent submissions
Now showing items 221-240 of 2200
-
Toward exact predictions of spin-phonon relaxation times: An ab initio implementation of open quantum systems theory
(2022)Spin-phonon coupling is the main driver of spin relaxation and decoherence in solid-state semiconductors at finite temperature. Controlling this interaction is a central problem for many disciplines, ranging from magnetic ... -
Multiwavelength Observations of Solar Magnetic Phenomena and Particle Acceleration
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)The solar magnetic field is instrumental in controlling the dynamics and topology of all coronal phenomena. The magnetic flux we observe varies by a factor of ~8 over a twenty-two year cycle causing a modulation in the ... -
Examining How Planets Interact With The Stellar Wind Using 3D Numerical Models
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)The majority of planets do not exist in empty space, but are embedded in the stellar wind, which consists of mostly ionised Hydrogen ejected from the host star. Understanding stellar wind-planet interactions is of huge ... -
Disorder and synchronization in nonequilibrium Bose-Einstein condensates
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)In this thesis, we investigate the impact of spatial disorder on driven-dissipative Bose-Einstein condensates (BECs). Bose-Einstein condensation is a collective phenomenon where many particles spontaneously occupy a single ... -
Manipulation of Vanadium Oxide Characteristics for Applications: Resistive switching & Reflectance Anisotropy Spectroscopy
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)This thesis deals with the study of vanadium dioxide, vanadium pentoxide and the mixed 4+ and 5+ valence vanadium oxide phases, or Wadsley phases. Thin films (VO2) and single crystals (V2O5) are examined. Vanadium dioxide ... -
Optimisation of Electrolytically-gated Thin Film Transistors made from Printed Nanosheet Networks
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)Networks of two-dimensional nanosheets show great potential in a wide variety of different applications, with particular focus on the area of printed electronics. One of the main issues facing such nanosheet network ... -
Quantum Control of Thermodynamic Processes in Semiconductors
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)In this thesis, we explore theoretically the thermodynamics of heat exchange in laser driven solid state systems. In particular, we focus on the heat exchanged between phonons and a semiconductor quantum dot exciton, driven ... -
Low Frequency Observations of the Solar Corona using LOFAR
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)The Sun is a highly dynamic, active star, dictated by the evolution of its magnetic fields, which transition from periods of maximum activity to periods of minimum activity over an 11-year cycle. During solar maximum the ... -
Connections between Internal and Surface properties of Massive Stars
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)Massive stars have an important impact on the universe. They are responsible for the generation of many of the chemical elements such as oxygen and silicon. They can produce core collapse supernovae which impact the chemical ... -
Direct measurement of the contribution of street lighting to satellite observations of nighttime light emissions from urban areas
(2021)Nighttime light emissions are increasing in most countries worldwide, but which types of lighting are responsible for the increase remains unknown. Also unknown is what fraction of outdoor light emissions and associated ... -
Single-pulse all-optical partial switching in amorphous DyxCo1-xand TbxCo1-xwith random anisotropy
(2022)Repeated uniform switching of the magnetization of thin films of ferrimagnetic amorphous Gdx (FeCo)1 x in response to single fast laser pulses is well established. Here, we report unusual toggle switching in thin films ... -
Ultrafast Optical Nonlinearity of Liquid Phase Exfoliated Pdse2 Nanosheets.
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)In recent years, the study of condensed matter and optical physics has resulted in increasing technological progress, and this study may be credited with a significant portion of current scientific research and technical ... -
Evaluation of STEM@University Experiences for Transition Year Students
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)This master's monograph and research present a study on the influence of STEM@University (a non-formal, university-school intervention) on a Transition Year student's STEM identity, through the measurement of STEM capital, ... -
Predicting tensorial molecular properties with equivariant machine learning models
(American Physical Society (APS), 2022)Embedding molecular symmetries into machine-learning models is key for efficient learning of chemico-physical scalar properties, but little evidence on how to extend the same strategy to tensorial quantities exists. Here ... -
Dielectric Networks from solution processed 2D nanomaterials
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)Shortly after the demonstration of the existence of free-standing graphene, the need for large scale production of two-dimensional nanomaterials was met by the emergence of a solution processing method called liquid phase ... -
Probing the Solar Corona at High Temporal and Spatial Resolution with the Low Frequency Array
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)The solar corona is the outermost layer of the Sun's atmosphere. Advancements in radio astronomy over the last 50 years have revealed a number of radio phenomena which occur in the corona each with different temporal and ... -
Hydrogen-Intercalated 2D Magnetic Bilayer: Controlled Magnetic Phase Transition and Half-Metallicity via Ferroelectric Switching
(2022)Electrically controlled magnetism in two-dimensional (2D) multiferroics is highly desirable for both fundamental research and the future development of low-power nanodevices. Herein, inspired by the recently experimentally ... -
Using Weakly Supervised Deep Learning to Classify and Segment Single-Molecule Break-Junction Conductance Traces
(2021)In order to design molecular electronic devices with high performance and stability, it is crucial to understand their structure-to-property relationships. Single-molecule break junction measurements yield a large number ... -
Transition between large and small electron polaron at neutral ferroelectric domain walls in BiFeO3
(2021)Ferroelectric domain walls are planes within an insulating material that can accumulate and conduct charge carriers, hence the interaction of the domain walls with the charge carriers can be important for photovoltaic and ... -
Prediction of the two-dimensional Janus ferrovalley material LaBrI
(2021)Two-dimensional (2D) ferrovalley materials, displaying coexistence of spontaneous spin and valley polarizations, have recently attracted significant attention due to their potential for applications in the fields of ...
