Investigation of superconductivity effects in single-phase and multiphase Bi2Sr2CaCu2O8 single-crystals at 2-MM wavelengths

Experimental investigations of superconductivity effects in single-phase and multiphase Bi₂Sr₂CaCu₂O₈ single-crystals have been carried out at 142 GHz frequency by means of the standing wave profile method [1]. Josephson harmonic generation has been observed to be responsible for the appearence of additional peaks on the standing wave profile of the open dielectric resonator loaded with a properly orientated multiphase high-T_c superconductor specimen. This leads to the conclusion that most of the Josephson junctions in multiphase crystals are located in certain crystallographic planes. The investigations of temperature dependencies showed that sharp resonant peaks of conductivity observed earlier [2] at 60 GHz could also be observed at 142 GHz.     

Theoretical and experimental analysis of waveguide containing transversally magnetized strongly gyrotropic dissipative semiconductor layer

In this paper we present the Maxwell equations' solution method enabling to electrodynamically rigorously compute opened and screened waveguides containing transversally magnetized gyrotropic material. There have been theoretically and experimentally analysed a rectangular metal waveguide having along the narrow wall a gyrotropic dissipative layer ofn-InSb. There has been found the resonant waveguide losses' dependence on the magnitude of the biasing magnetic field. The correspondence of computed and experimental data is fairly good.     

Optimization of Composition,Synthesis, and Study of Broadband Multilayer Mirrors for the EUV Spectral Range

Technical Physics - Broadband Mo/Si and Mo/Be multilayer stack-type mirrors for wavelength intervals of 11.1–13.8, 17–21, and 28–33 nm have been developed and fabricated. Uniform...     

Influence of Thermal Annealing on the Properties of Multilayer Mo/Be Mirrors

Technical Physics - The influence of thermal action on X-ray optics performance and structure of films and transition regions in multilayer Mo/Be mirrors optimized for a reflection maximum in the...     

Beryllium-Based Multilayer Mirrors for the Soft X-Ray and Extreme Ultraviolet Wavelength Ranges

Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques - The latest experimental results of studying beryllium-containing multilayer mirrors are reviewed. The mirrors are of...     

Simple method for investigating electromagnetic properties of high-Tc superconductors at two-millimeter wavelengths

A method for investigating the electromagnetic properties of high-T_c superconductors (HTS) in a 2-mm wavelength band has been proposed. The method is based on the use of a cylindrical tube open dielectric resonator (ODR) loaded with a HTS sample. The Josephson harmonic generation at microwave frequencies can be investigated by means of the method. A small cross section of the ODR makes it possible to investigate surface variations of HTS sample electromagnetic properties and their temperature dependencies.     

Dispersion study of open slot-lines taking into account conductor thickness and substrate width

By means of singular integral equations' method we've studied dispersion of open slot lines having nonstandard cross-section geometry. Peculiar dependence of eigenmodes' number and slot width between conductor strips has been found.