School of Physics: Recent submissions
Now showing items 1-20 of 840
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Surface Studies of Niobium Oxides
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)In this thesis, two important niobium-oxygen systems are studied. The first system is the NbO "nanocrystal" termination of Nb(110). A new model to explain this structure based on a monolayer of oxygen covering the surface ... -
Modelling electromechanical properties of 2D materials and heterostructures
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Strain, both naturally occurring and deliberately engineered, can have a considerable effect on the structural, electronic, and transport properties of 2D and layered materials. Uniaxial or biaxial heterostrain (i.e. ... -
Spectroscopic Identification of the Charge Transfer State in Thiophene/Fullerene Heterojunctions: Electroabsorption Spectroscopy from GW/BSE Calculations
(2023)Creation of charge transfer (CT) states in bulk heterojunction systems such as C60/polymer blends is an important intermediate step in creation of carriers in organic photovoltaic systems. CT states generally have ... -
Electrical detection of spin pumping in van der Waals ferromagnetic Cr2Ge2Te6 with low magnetic damping
(2023)The discovery of magnetic order in atomically-thin van der Waals materials has strengthened the alliance between spintronics and two-dimensional materials. An important use of magnetic two-dimensional materials in spintronic ... -
Realization of Zero-Field Skyrmions in a Magnetic Tunnel Junction
(2023)Magnetic skyrmions are topologically protected noncollinear spin textures, which are regarded as promising information carriers for next-generation spintronic devices due to their small size and the low current density ... -
Multifunctional Thin Films of Vanadium Oxides for Enhanced Energy Applications
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)This thesis deals with the growth, characterisation, and application of VO2 and V2O3 thin films. Various methods were employed to prepare and analyze the VO2 and V2O3 films, aiming to explore the suitability of their ... -
Deterministic multi-level spin orbit torque switching using focused He+ ion beam irradiation
(2023)He+ ion irradiation is used to pattern multiple areas of Pt/Co/W films with different irradiation doses in Hall bars. The resulting perpendicular magnetic anisotropy landscape enables selective multilevel current-induced ... -
A fully compensated ferrimagnetic half metal Co1-xCrxS2 with Curie temperature above room temperature
(2023)Fully compensated ferrimagnetic half metals have attracted great attention in spintronics. Unlike many previous calculations based on hypothetical ordered alloys, here we look for existing solid solution series taking as ... -
Structural, magnetic and electronic properties of L21 -ordered Ru2-xMn1+xAl Heusler alloy thin films
(2023)The cubic Heusler alloy Ru2–xMn1+xAl is grown in thin film form on MgO and MgAl2O4 substrates. It is a highly spin-polarised ferrimagnetic metal, with weak magnetocrystalline anisotropy. Although structurally and chemically ... -
High-Figure-of-Merit Biosensing and Enhanced Excitonic Absorption in an MoS2-Integrated Dielectric Metasurface
(2023)Among the transitional metal dichalcogenides (TMDCs), molybdenum disulfide (MoS2) is considered an outstanding candidate for biosensing applications due to its high absorptivity and amenability to ionic current measurements. ... -
Nanoscale Gap-Plasmon-Enhanced Superconducting Photon Detectors at Single-Photon Level
(2023)With a growing demand for detecting light at the single-photon level in various fields, researchers are focused on optimizing the performance of superconducting single-photon detectors (SSPDs) by using multiple approaches. ... -
Packing soft spheres: experimental demonstrations with hydrogels
(2023)We describe a number of different experimental set-ups that use hydrogel spheres to demonstrate dense packings of deformable spheres in various geometries. The arrangements are similar to those of bubbles in foams, ... -
Transparent Conductors Printed from Grids of Highly Conductive Silver Nanosheets
(2023)Transparent conductors (TCs) represent key components in many applications from optoelectronic devices to electromagnetic shielding. While commercial applications typically use thin films of indium tin oxide, this material ...