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Now showing items 881-890 of 2111
Finite-size fluctuations and photon statistics near the polariton condensation transition in a single-mode microcavity
(2006)
We consider polariton condensation in a generalized Dicke model, describing a single-mode cavity containing
quantum dots, and extend our previous mean-field theory to allow for finite-size fluctuations. Within ...
Linear and nonlinear waveguiding in Rhodamine-doped
(1991)
Planar waveguiding of 350-ps pulses, at a wavelength in the region of the long-wavelength tail of the absorption, is observed by coupling by prism into spun films of Rhodamine-B-doped epoxy films. In a 13-?.m-thick film, ...
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 ...
Tunnelling interlayer exchange coupling between oxide ferromagnets: Analysis for Fe3O4/vac/Fe3O4 case
(2009)
We have investigated tunneling interlayer exchange coupling (TIEC) between ferrimagnetic
Fe3O4 ?lms via a tunneling barrier. In this investigation we employ ab-initio density functional
theory to study a generic tunneling ...
Device design of 1.3?m AlGaInAs-InP narrow strip structure for self-pulsation operation
(SPIE, 2005)
A complete design of 1.3 ?m AlGaInAs/InP narrow stripe semiconductor lasers for self-pulsating operation is realised by
using a 2?1D simulation model. This numerical model is based on the effective index method and ...
Multi-scale analysis of current-driven spin dynamics in magnetic tunnel junctions
(Trinity College Dublin. School of Physics. Discipline of Physics, 2020)
Magnetic materials are of fundamental importance for the next generation of sensing and storage applications.
The operating principle of such devices is based upon manipulating the orientation of the atomic magnetic moments. ...
Studies of foam drainage and stability
(Trinity College (Dublin, Ireland). School of Physics, 2013)
While the static nature of foams has been well studied, the dynamic nature of a foam how it evolves and responds to external forces and changing environments is less well understood. We will present results from the analysis ...
From the bulk to monatomic wires: An ab initio study of magnetism in Co systems with various dimensionality
(American Physical Society, 2002)
A systematic ab initio study within the framework of the local-spin-density approximation including spin-orbit coupling and an orbital-polarization term is performed for the spin and orbital moments and for the x-ray ...
Size-dependent saturable absorption and mode-locking of dispersed black phosphorus nanosheets
(2016)
Size dependence of the saturable absorption (SA) property for black phosphorus (BP) was investigated. Three types of BP dispersions with different sizes were prepared using the liquid phase exfoliation method. By fitting ...
Chandra observations of coronal emission from the early-G supergiants Alpha and Beta Aquarii
(University of Colorado, 2005)
We report Chandra detections of coronal X-rays from the early-G supergiants
? Aquarii (HD209750: G2 Ib) and ? Aquarii (HD204867: G0 Ib). Previous
ROSAT observations of these archetype \hybrid chromosphere" stars were ...