Browsing Physics (Scholarly Publications) by Title
Now showing items 577-596 of 1691
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Formation of the strain-induced electronic superstructure on the magnetite (111) surface
(2003)We present direct experimental evidence of the formation of a superstructure on the (111) surface of a magnetite, Fe3O4 single crystal. The superstructure, which has a periodicity of 42A and three-fold symmetry, has been ... -
Forster resonant energy transfer in QD structures
(2009)Forster resonant energy transfer (FRET) has been investigated in two different quantum dot (QD) structures. Colloidal CdTe QDs of two different sizes act as energy donors and acceptors. They have been deposited in a mixed ... -
Förster resonant energy transfer in quantum dot layers
(2010)Förster resonant energy transfer (FRET) in quantum dot (QD) layer structures has been analyzed. Small and large colloidal CdTe QDs were used as donors and acceptors, respectively. A FRET theory for random donor/acceptor ... -
Fractal Growth of a Conventional Calamitic Liquid Crystal
(2004)We report observation of liquid crystal phase ordering via fractal growth aggregates for a calamitic, non-bent-core mesogen. Fractal growth of a conventional smectic-C (Sm-C) phase from the isotropic melt after a temperature ... -
Free Exciton Spectra in Heteroepitaxial ZnSe/GaAs layers
(American Physical Society, 2000)The free-exciton photoluminescence (PL) and reflection spectra of metal-organic vapor-phase-epitaxy grown ZnSe/GaAs epilayers with a thickness greater than that of the strain relaxation thickness were studied experimentally ... -
The free-electron response in reflectance anisotropy spectra
(2006)Reflectance anisotropy spectra (RAS), extended into the near infrared spectral region, of anisotropic metal islands, metal surfaces, and atomic nanowires are analyzed with respect to anisotropies in the optical response ... -
Friedel Oscillations in graphene: Sublattice Asymmetry in Doping
(2013)Symmetry breaking perturbations in an electronically conducting medium are known to produce Friedel oscillations in various physical quantities of an otherwise pristine material. Here we show in a mathematically transparent ... -
From fused aromatics to graphene-like nanoribbons: The effects of multiple terminal groups, length and symmetric pathways on charge transport
(2011)A class of molecular ribbons, with almost-ideal charge transmission, that is weakly dependent on the anchoring structure or electrode crystalline orientation and easy to synthesize has been identified. Charge transport ... -
From radio to X-ray: The quiescent atmosphere of the dMe Flare Star EV Lac
(2006)We report on multi-wavelength observations spanning radio to X-ray wavelengths of the M dwarf flare star, EV Lacertae, probing the characteristics of the outer atmospheric plasma from the upper chromosphere to the corona. ... -
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 ... -
A fully compensated ferrimagnetic half metal Co1-xCrxS2 with Curie temperature above room temperature
(2023)Fully compensated ferrimagnetic half metals have attracted great attention in spintronics. Unlike many previous calculations based on hypothetical ordered alloys, here we look for existing solid solution series taking as ... -
Fundamental gap of molecular crystals via constrained density functional theory
(2016)The energy gap of a molecular crystal is one of the most important properties since it determines the crystal charge transport when the material is utilized in electronic devices. This is, however, a quantity difficult ... -
A further look at waveguide lasers
(IEEE, 1998)A new approach to the dynamical evolution of a waveguide laser is presented which goes beyond the usual Maxwell-Bloch (MB) equations in that it takes fully into account the phase of the matter quantum field that describes ... -
GaN resonant cavity light-emitting diodes for plastic optical fibre applications
(2004)The optical designs of resonant GaN light-emitting diodes (LEDs) have been determined for maximum extraction efficiency into typical plastic optical fiber of numerical aperture 0.5. An optimum extraction efficiency of 3.9% ... -
Gas-phase interstitial modification of rare-earth intermetallics.
(IEEE, 1992)The gas-phase interstitial modification of rare-earth intermetallics is studied. Net reaction energies for nitrogen in Sm2Fe17 and Nd(Fe11Tl) are U 0=-57 kJ/mole and U0=-51 kJ/mole, respectively. The equilibrium nitrogen ... -
Gate controlled spin pumping at a quantum spin Hall edge
(2013)We propose a four-terminal device designed to manipulate by all electrical means the spin of a magnetic adatom positioned at the edge of a quantum spin Hall insulator. We show that an electrical gate, able to tune the ... -
General approach to the analysis of plasmonic structures using spectroscopic ellipsometry
(2013)In this article a route to analyze the full optical response of plasmonic structures is developed. First, the simple case of an anisotropic thin plasmonic layer supported on a transparent substrate is analyzed by ... -
A general strategy for hybrid thin film fabrication and transfer onto arbitrary substrates
(2014)The development of thin film-based structures/devices often requires thin films to be transferred onto arbitrary substrates/surfaces. Controllable and non-destructive transfer method, although highly desired, remains ... -
Generalizing solubility parameter theory to apply to one- and two-dimensional solutes and to incorporate dipolar interactions
(2013)Hildebrand and Hansen solubility parameters are commonly used to identify suitable solvents for the dispersion or dissolution of a range of solutes, from small molecules to graphene. This practice is based on a number of ... -
Generation of a radially polarized light beam using internal conical diffraction
(2011)Using a combination of internal conical diffraction and Mach-Zehnder interferometry we have theoretically and experimentally demonstrated an efficient new technique for the conversion of a linearly polarized Gaussian laser ...
