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Now showing items 1911-1920 of 2111
Resonant electronic states and I-V curves of Fe/MgO/Fe(100) tunnel junctions
(2009)
The bias dependence of the tunnel magnetoresistance
TMR
of Fe/MgO/Fe tunnel junctions is investigated
theoretically with a fully self-consistent scheme that combines the nonequilibrium Green?s-function method
with ...
First principles study of the multiferroics BiFeO3, Bi2FeCrO6, and BiCrO3: Structure, polarization, and magnetic ordering temperature
(American Physical Society, 2005)
We present results of an ab initio density-functional theory study of three bismuth-based multiferroics, BiFeO3, Bi2FeCrO6, and BiCrO3. We disuss differences in the crystal and electronic structure of the three systems and ...
Cubic Mn 2 Ga Thin films: Crossing the spin gap with ruthenium
(2014)
Cubic Mn2Ga films with the half-Heusler C1b structure are grown on V (001) epitaxial films. The phase is a soft ferrimagnet, with Curie temperature TC = 225 K and magnetization Ms=280 kA m−1, equivalent to 1.65μB per ...
Non-equilibrium transport properties of quasiperiodic models
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)
The advances in the manipulation of ultracold atoms trapped by optical lattices has established this set-up as a promising analogue simulator of quantum Hamiltonians. The extended coherence times allow for the monitoring ...
'Pulsed X-ray shadowgraphy of dense, cool, laser-imploded plasma
(American Physical Society, 1978)
Laser implosion of 87-bar neon-filled glass microballoon targets produces a dense, cool plasma whose development in time and space is recorded by pulsed-x-ray shadowgraphy with soft x rays from a separate laser-produced ...
Development of a Practicable Digital Pulse Read-Out for Dark-Field STEM
(2021)
When characterising beam-sensitive materials in the scanning transmission electron microscope (STEM), low-
dose techniques are essential for the reliable observation of samples in their true state. A simple route to
minimise ...
Impurities and magnetic interactions in graphene : a theoretical study
(Trinity College (Dublin, Ireland). School of Physics, 2012)
Graphene is a two-dimensional carbon material that until its recent discovery
was assumed not to exist in the free state. Graphene-related materials
have been in the scientific limelight since then due to several key ...
Strain relaxation in Fe3O4/MgAl2O4 heterostructures: Mechanism for formation of antiphase boundaries in an epitaxial system with identical symmetries of film and substrate
(2009)
Strain relaxation studies in epitaxial magnetite, Fe3O4, thin films grown on MgAl2O4 100 substrates are
reported. The study shows that the films were relaxed in line with the theoretical model prediction with a
critical ...
Point contact Andreev reflection by nanoindentation of polymethyl methacrylate
(American Institute of Physics, 2006)
A versatile technique for performing spin polarization measurements via point contact Andreev
reflection has been developed. This technique involves depositing a superconductor lead onto a
thin film of the material to ...