We demonstrate the numerical design and the experimental validation of frequency dependent directional emission from a dielectric photonic crystal structure. The wave propagates through a photonic crystal line-defect waveguide, while a surface layer at the termination of the photonic crystal enables the excitation of surface modes and a subsequent grating layer transforms the surface energy int...

Abstract Since crystalline grain-boundary subphases are expected in SmFe 12 -based permanent magnets, stable crystal structures dependent on temperatures and compositions examined by first-principles thermodynamics. The free-energy landscape of ternary Sm–Cu–Fe is constructed with self-consistent phonon theory to overcome the dynamical instability problem, where a barrier between binary B2 Sm–C...

We develop a semiquantitative theory to describe the experimentally observed energy gain when two light beams intersect in hybrid organic-inorganic photorefractives. These systems consist of a nematic liquid-crystal (LC) layer placed between two photorefractive windows. A periodic space-charge field is induced by the interfering light beams in the photorefractive windows. The field penetrates i...

A mutual interplay between the charge and spin degrees of freedom in itinerant magnets leads to a plethora topological textures, such as magnetic skyrmion vortex crystals, both centrosymmetric noncentrosymmetric hosts. Meanwhile, their stabilization has been extensively studied system including classical localized spins. We here study realization crystal triangular-lattice Hubbard model, where ...

Background: To determine the basic physical and dosimetric properties of a new synthetic single-crystal diamond detector and its application for relative small field dosimetry. Materials and Methods: The pre-irradiation dose required to stabilize detector response, dose rate dependence, photon and electron energy dependence, temperature dependence and angular dependence of MicroDiamond detector...

In this work, we study the magnetization behaviors of the classical Ising model on the triangular lattice using Monte Carlo simulations, and pay particular attention to the effect of further-neighbor interactions. Several fascinating spin states are identified to be stabilized in certain magnetic field regions, respectively, resulting in the magnetization plateaus at 2/3, 5/7, 7/9 and 5/6 of th...

We study the influence of antiprotons and protons traveling through LiF on the band structure of the insulator using the embedded-cluster method. The crystal is represented by Fm − Lin + clusters with up to 19 fluorine ions embedded in a lattice of point charges representing the remainder of the crystal. The minimum excitation energy of LiF perturbed by the anti proton impurity is calculated em...

The molecule of the title compound adopts a twisted geometry with rotation approximately 30° between mean planes imidazole and phenyl rings. crystal structure displays hydrogen bonded chains as result N–H···N interactions rings neighboring molecules. These H-bonded are assembled into flat molecular layers parallel to (121) plane. Two intermolecular interactions, involving inversion-related mole...