School of Physics: Recent submissions
Now showing items 241-260 of 2200
-
Stiffness and atomic-scale friction in superlubricant MoS<sub>2</sub> bilayers
(2023)By using ab-initio-accurate force fields and molecular dynamics simulations we demonstrate that the layer stiffness has profound effects on the superlubricant state of two-dimensional van der Waals heterostructures. These ... -
On the conservation of the angular momentum in ultrafast spin dynamics
(2021)The total angular momentum of a close system is a conserved quantity, which should remain constant in time for any excitation experiment once the pumping signal has extinguished. Such conservation, however, is never satisfied ... -
First-principles prediction of polar half-metallicity and out-of-plane piezoelectricity in two-dimensional quintuple layered cobalt selenide
(2021)Polar half-metals, possessing both polarity and half-metallicity, may have potential as media in novel spintronic quantum devices, but they have never been reported in the two-dimensional (2D) form. By combining the particle ... -
High-Performance Spin Filters Based on 1,2,4,5-Tetrahydroxybenzene Molecules Attached to Bulk Nickel Electrodes
(2021)Achieving highly spin-polarized current at the nanoscale is of paramount importance in molecular spintronics. Using a self-consistent ab initio approach that combines the nonequilibrium Green’s function formalism with spin ... -
Interfacing 2D VS2 with Janus MoSSe: Antiferromagnetic electric polarization and charge transfer driven Half-metallicity
(2021)Half metallic 2D materials with 100% spin polarization at the fermi level can be applied to spintronics to enhance the device efficiency. We identified that the Janus MoSSe monolayer can induce halfmetallicity in the VS2 ... -
Highly Sensitive Composite Foam Bodily Sensors Based on the g-Putty Ink Soaking Procedure
(2021)Electrically conductive composite materials are highlighted as a potential tech path toward future flexible devices for wearable health technologies. To be commercially viable, these materials must not only be mechanically ... -
Quantifying the Piezoresistive Mechanism in High-Performance Printed Graphene Strain Sensors
(2022): Printed strain sensors will be important in applications such as wearable devices, which monitor breathing and heart function. Such sensors need to combine high sensitivity and low resistance with other factors such ... -
Quantifying the Effect of Separator Thickness on Rate Performance in Lithium-Ion Batteries
(2022)In addition to improving parameters such as energy density and stability, it is important to maximise rate performance in lithium ion batteries. While much work has focused on rate-limiting factors associated with the ... -
Liquid Phase Exfoliation of Nonlayered Non-Van der Waals Iron Trifluoride (FeF3) into 2D-Platelets for High-Capacity Lithium Storing Cathodes
(2022)Developing high-performance cathode materials for lithium-ion batteries is necessary to maximise both energy and power density. One promising cathode material is iron trifluoride (FeF3) having a high theoretical capacity ... -
2D nanosheets from fool's gold by LPE: High performance lithium-ion battery anodes made from stone
(2021)Recently, it has been shown that it is possible to apply liquid-phase exfoliation to non-layered materials, yielding quasi-2D nanosheets. It has been proposed that even a slight bonding anisotropy in the starting crystal ... -
The electrical conductivity of solution-processed nanosheet networks
(2021)Solution-processed networks of 2D nanosheets are promising for a range of applications in the field of printed electronics. However, the electrical performance of these networks represented for example by the mobility – ... -
High-frequency power loss mechanisms in ultra-thin amorphous ribbons
(2021)Soft magnetic amorphous materials with ultra-low power loss are highly desirable for high-frequency drive applications. The present work demonstrates the high-frequency power loss performance and underlying loss mechanisms ... -
Highly Conductive Networks of Silver Nanosheets
(2022)Although printed networks of semiconducting nanosheets have found success in a range of applications, conductive nanosheet networks are limited by low conductivities (<106 S m−1). Here, dispersions of silver nanosheets ... -
Stability of Mn2RuxGa-based multilayer stacks
(2022)Perpendicular heterostructures based on a ferrimagnetic Mn2RuxGa (MRG) layer and a ferromagnetic Co/Pt multilayer were examined to understand the effects of different spacer layers (V, Mo, Hf, HfOx and TiN) on the interfaces ... -
Single pulse all-optical toggle switching of magnetization without gadolinium in the ferrimagnet Mn2RuxGa
(2020)Energy-efficient control of magnetization without the help of a magnetic field is a key goal of spintronics. Purely heat-induced single-pulse all-optical toggle switching has been demonstrated, but so far only in Gd-based ... -
Spin polarization and magnetotransport properties of systematically disordered Fe60Al40 thin films
(2021)We investigate the evolution of spin polarization, spontaneous Hall angle (SHA), saturation magnetization, and Curie temperature of B2-ordered Fe 60 Al 40 thin films under varying antisite disorder, induced by ... -
Exchange-driven all-optical magnetic switching in compensated 3d ferrimagnets
(2020)Understanding how a single laser pulse can toggle magnetization in a compensated 3d ferrimagnet is a critical problem in ultrafast magnetism. To resolve it, we test single-shot all-optical switching of magnetization in Mn ... -
CALPHAD-assisted development of in-situ nanocrystallised melt-spun Co-Fe-B alloy with high Bs (1.57 T)
(2021)A thermodynamics-based approach, Calculation of Phase Diagram (CALPHAD), combined with topological instability parameters are proposed and experimentally evaluated, in order to optimise in-situ nanocrystallisation of rapidly ... -
LOFAR Observations of Shocks in the Solar Corona
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)The Sun can produce large-scale energetic events such as solar flares and coronal mass ejections, which can excite shock waves that propagate from the low solar atmosphere into interplanetary space. Such shocks can result ... -
Hilbert-space fragmentation, multifractality, and many-body localization
(2021)Investigating many-body localization (MBL) using exact numerical methods is limited by the exponential growth of the Hilbert space. However, localized eigenstates display multifractality and only extend over a vanishing ...
