Now showing items 11-20 of 120
Geometric phase and o-mode blueshift in a chiral anisotropic medium inside a Fabry-Pérot cavity
Anomalous spectral shift of transmission peaks is observed in a Fabry-P´ erot cavity filled with a chiral anisotropic medium. The effective refractive index value resides out of the interval between the ordinary and the ...
Quantum phase transitions in two-dimensional tilted optical lattices
We discuss the quantum phase transition between the Mott-insulator state and the density-wave state of cold Bose atoms in a two-dimensional (2D) square lattice as the lattice is adiabatically tilted along one of its primary ...
Localised optical states in a structure formed by two oppositely handed cholesteric liquid crystal layers and a metal
A new model for observing localised optical states in a structure containing a cholesteric liquid crystal is proposed. The dependence of the mode frequency on the angle between directors at the interface of oppositely ...
The optical Tamm states at the interface between a photonic crystal and a nanocomposite containing core–shell particles
Optical Tamm states localized at the edges of a photonic crystal bounded from one or both sides by a nanocomposite have been studied. The nanocomposite consists of metallic nanoinclusions, which have a spherical or ...
Uniform Impurity Scattering in Two-Band s± and s++ Superconductors
The s± and s++ models for the superconducting state are subject of intense studies regarding Fe-based superconductors. Depending on the parameters, disorder may leave intact or suppress T c in these models. Here, we study ...
Impurity-Induced Smearing of the Spin Resonance Peak in Fe-Based Superconductors
The spin resonance peak in the iron-based superconductors is observed in inelastic neutron scattering experiments and agrees well with predicted results for the extended s-wave (s±) gap symmetry. On the basis of four-band ...