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We report new experimental results for the Raman- and infrared-active modes in the layered compound MoO3. The observed frequencies are explained in terms of a valence-force-field model, including interlayer interactions. Most of the 45 optical modes are do ...
This paper describes recent progress in the development of Nb3Sn wires in Switzerland using the internal tin method The work war carried out in close collaboration between the Fusion Technology Division of CRPP and Swissmetal, with the emphasis on conducto ...
The coexistence of localized and free holes in modulation doped InGaAs/InP quantum wells, which show Fermi edge singularities in the cw photoluminescence and excitation spectra, has been determined by picosecond time-resolved luminescence spectroscopy. A l ...
The dynamic behavior of a continuous culture of Saccharomyces cerevisiae subjected to a sudden increase in the diln. rate has been successfully modelled for anaerobic growth on glucose, and for aerobic growth on acetate, on ethanol, and on glucose. The cat ...
The reaction of FePS3 single crystals with a 1.6M n-butyl lithium solution in n-hexane has been followed through de electrical conductivity measurements as a function of the intercalation time. In order to investigate the influence of lithium insertion on ...
The authors present measurements of the temperature dependence of the upper critical field Hc2 and of the magnetoresistance for V1-xSix superconducting amorphous alloys. Negative deviations from the classical variation of Hc2 in a dirty superconductor are ...
We report on the ab-plane optical reflectance measurements of single crystals of Y-doped Bi2Sr2CaCu2O8+delta and Pr-doped YBa2Cu3O7-delta over a wide frequency range from 80 to 40 000 cm(-1) (10 meV-5 eV) and at temperatures between 20 and :300 K. Y and Pr ...
Pb(Sc1/2Ta1/2)O-3 ceramics have been characterized by dielectric measurements in a wide range of frequencies (10(2)-10(9) Hz). A strong dispersion occurs with two low and high frequency contributions below the transition temperature. Only high frequency re ...
The electrical conductivity of SrBi4Ti4O15 (SBT) has been measured under controlled oxygen partial pressure. Both acceptor and donor doping effects were studied using de conductivity and impedance measurements. In addition to the ceramic samples with rando ...
Chaos generated by the interaction between charged particles and electrostatic plasma waves has been observed in a linear magnetized plasma. The macroscopic wave properties, the kinetic ion dielectric response, and the microscopic heating mechanisms have b ...
