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Now showing items 641-650 of 2111
Sub-picosecond exchange-relaxation in the compensated ferrimagnet Mn2RuxGa
(2021)
We study the demagnetization dynamics of the fully compensated half-metallic ferrimagnet Mn2RuxGa. While the two antiferromagnetically coupled sublattices are both composed of manganese, they exhibit different temperature ...
Plasmonic Colour Printing by Light Trapping in Two-Metal Nanostructures
(MDPI, 2019)
Structural colour generation by nanoscale plasmonic structures is of major interest for
non-bleaching colour printing, anti-counterfeit measures and decoration applications. We explore
the physics of a two-metal plasmonic ...
Vacancies, interstitials and close Frenkel Pairs on the zinc sublattice of ZnSe
(American Physical Society, 1996)
Zinc vacancies (VZn), zinc interstitials (Zni), and ~25 distinct VZn?Zni Frenkel pairs of different lattice separations are observed in ZnSe by the optical detection of magnetic resonance in photoluminescence after 2.5 MeV ...
Asymmetry in energy versus spin transport in certain interacting disordered systems
(2019)
We study energy transport in disordered XXZ spin-1/2 chains driven to nonequilibrium configurations by thermal reservoirs of different temperatures at the boundaries, using large-scale matrix product simulations. In ...
Forster resonant energy transfer in nanocrystal quantum dot structures
(Trinity College (Dublin, Ireland). School of Physics, 2010)
Forster resonant energy transfer (FRET) is an energy transfer mechanism based on dipole-dipole interactions. FRET occurs in photosynthetic active organisms and is used in artificial structures to create energy flow in ...
Ab initio study on the magnetostructural properties of MnAs
(2006)
The magnetic and structural properties of MnAs are studied with
ab initio
methods and by mapping total
energies onto a Heisenberg model. The stability of the different phases is found to depend mainly on the
volume and ...
Carbon nanotube: a low-loss spin-current waveguide
(2010)
We demonstrate with a quantum-mechanical approach that carbon nanotubes are excellent spin-current waveguides and are able to carry information stored in a precessing magnetic moment for long distances with very little ...
Measurement of electric-field intensities using scanning near-field microwave microscopy
(2003)
In this paper, we propose methods for the measurement of electric intensities of a microwave field above the surface of microwave circuits. Using miniaturized coaxial antennas, we measure all spatial components of the ...
FIR absorption in CdSe quantum dot ensembles
(Wiley & Sons, 2001)
Absorption of far-infrared (FIR) radiation in very small CdSe crystallites (quantum dots, QDs) via excitation of confined dipolar vibrational modes was studied, both theoretically and experimentally. Spatial quantisation ...
ASCA observations of the composite warm absorber in NGC 3516
(American Astronomical Society, 1996)
We obtained X-ray spectra of the Seyfert 1 galaxy NGC 3516 in 1995 March using the Japanese X-ray satellite, ASCA. Simultaneous far-UV observations were obtained with the Hopkins Ultraviolet Telescope on the Astro-2 shuttle ...