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Indirect exchange coupling between magnetic adatoms in carbon nanotubes
(2005)
The long-range character of the exchange coupling between localized magnetic moments indirectly mediated by the conduction electrons of metallic hosts can play a significant role in determining the magnetic order of ...
Percolation-dominated conductivity in a conjugated-polymer-carbon-nanotube composite
(1998)
We have made electrical measurements on a system using carbon nanotubes as the dopant material. A semiconjugated, organic polymer was mixed with carbon nanotubes to form a wholly organic composite. Composite formation from ...
Influence of Surface Electric Field on Exciton Photoluminescence of CdS: Self-Reversal of Spectral Lines
(1995)
The structure of luminescence spectra of free excitons in CdS single crystals at T = 77 K is investigated. The dip formation is found in the top part of free A and B exciton resonant peaks of photoluminescence (PL) spectra ...
Asymmetric Fabry-Perot device arrays with low insertion loss and high uniformity
(IEEE, 1992)
We report on arrays of normally ON asymmetric
Fabry-Perot modulator (AFPM) devices which exhibit a high
degree of uniformity between devices, with a thickness variation
across an array of 0.07%. The devices in one array ...
Spin transport in magnetic nanostructures
(Trinity College (Dublin, Ireland). School of Physics, 2005)
The study presented in this thesis is concerned with the spin dependent transport and spin transfer in magnetic nanostructures. The first two chapters are dedicated to introduce spin-electronics, electrical transport and ...
Waveguide Loss Measurement Using the Reflection Spectrum
(2008)
A method for waveguide loss measurement purely
based on the reflection spectrum is proposed. Using the Fourier
series expansion of the single longitudinal mode in the reflection
spectrum, the ratio between the second ...
Accelerating Materials Discovery with Machine Learning
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)
Materials discovery has always been constrained by the classic approach to scientific discovery, often characterized by a combination of either human intuition or luck. Machine learning (ML) gives us the opportunity to ...
Ferromagnetic resonance of magnetite films and iron nanowires
(Trinity College (Dublin, Ireland). School of Physics, 2010)
Ferromagnetic resonance (FMR) measurements were carried out at 9.6 GHz on thin magnetite films and iron nanowire arrays, produced by molecular beam epitaxy (MBE). The aims of the studies were to examine how the magnetic ...