Showing papers in "Solid State Communications in 1981"

TL;DR: In this paper, a relaxation in the q-vector selection rule for the excitation of the Raman active optical phonons was proposed to increase the red shift and broadening of the signal from microcrystalline silicon films.

TL;DR: In this article, the Raman spectra of crystalline graphite, graphite damaged by ion-etching, and structurally disordered pyrolytic and glassy carbons were examined as a function of excitation wavelength λ over the range 488.0 to 647.1 nm.

TL;DR: In this article, a physical interpretation for the dispersive charge transport arising from a distribution of localized states in disordered semiconductors is proposed, based on the progressive thermalization of electrons in an exponential distribution of traps.

TL;DR: In this paper, a systematic increase of the linewidth of luminescence, absorption and excitation spectra of undoped GaAs-Ga 1-x A l x As Multi-Quantum structures with decreasing layer thickness was reported.

TL;DR: In this paper, the stopping power of an electron gas for slow ions using the density functional formalism has been calculated using the self-consistent potential around the ion and from scattering theory determine the energy loss directly.

TL;DR: In this article, Raman scattering measurements were performed on polycrystalline silicon films prepared in a hydrogen plasma at temperatures between 70 and 400°C. The spectra showed several features which were correlated with X-ray diffraction measurements and assigned to crystalline and amorphous-like components.

TL;DR: In this paper, a direct way to obtain the spectra dependence of the optical absorption coefficient in the low-absorption region (10−1−103cm−1) on thin amorphous silicon films is presented.

TL;DR: In this article, the XPS and Mossbauer spectra at room temperature on ZnCrxGa2−xO4 spinel solid solutions are reported and the data indicate that, from the point of view of lattice parameters and electronic structure variations with the composition, the system is a suitable one for percolation studies.

TL;DR: In this article, the authors present a flexible theory based on a full multiple scattering cluster calculation, which can be used to extract such information in ordered, disordered and other complex systems now being studied using synchrotron radiation.

TL;DR: The optical absorption edge has been measured as a function of carrier concentration for thin films of zinc oxide prepared by organometallic chemical vapour deposition and reactive RF magnetron sputtering as mentioned in this paper.

TL;DR: In this paper, the authors identified the mobile ions as the ions, which neutralize the electronic space charge fields during thermal fixing of holograms in LiNbO3:Fe.

TL;DR: In this article, a collinear antiferromagnetic order was determined by dominating intralayer interactions between first (J1), second (J2) and third neighbours (J3) in the insulating compounds MnPSe3 and FePSe-3.

TL;DR: The optical reflectivity of the blue bronze K 0.3 MoO 3 has been measured on single crystals for photon energies between 0.03 and 12 eV at temperatures from 10 to 300 K using polarized light.

TL;DR: In this paper, high resolution electron energy loss spectra are reported for atomic hydrogen and deuterium adsorption on the Si (111) 7x7 surface, and strong indications are also obtained for the removal of adsorbed hydrogen probably via the formation and desorption of silane during hydrogen exposure.

TL;DR: This paper measured 4f core-level shifts and surface-to-bulk intensity ratios for surface atoms on the Au(111), (100) and (110) faces, which are consistent with a relaxed missing row model.

TL;DR: In this paper, the fate of carriers excited in an amorphous semiconductor by a pulse of light is described, and two processes are discussed: thermalization of carriers within a distribution of localized states, and carrier recombination.

TL;DR: In this paper, a detailed study of magnetic properties of [CHH(I 3 ) y ] x demonstrates that with quasi-uniform doping, the spin susceptibility is small, consistent with the soliton doping mechanism.

TL;DR: In this article, it was confirmed that the value of Curie (or Neel) temperature for the Mn sublattice decreases with increasing c constant and that the remaining compounds have antiferromagnetic properties.

TL;DR: In this paper, an anomalous change in electrical resistance with pressure was observed in crystalline Sb2Te3 around 80 kbar at room temperature, which was found to be closely related with a pressure-induced structural phase transition which was discovered by the present x-ray diffraction experiment.

TL;DR: In this article, it was shown that strong inelastic processes are not necessary for suppression of localization effects in disordered conductors and the influence of an external high frequency electric field on quantum corrections to conductivity is considered.

TL;DR: In this paper, effective pair interactions for binary f.c. transition metal alloys have been computed using a generalized perturbation method starting from the completely disordered state, and their properties, as a function of interatomic distance, band filling, disorder and concentration are discussed.

TL;DR: In this paper, the spin-orbit splitting of the valence bands of the uniaxial and cubic polytypes of 6H, 15R and 3C SiC was measured.

TL;DR: In this article, core level binding energy shifts for the element A of a large number of dilute alloys AB have been measured, where the concentration of the dilute component A is 10% or less.

TL;DR: In this paper, the perturbation theory for direct-gap zincblende semiconductors using exact nonparabolic energies and matrix elements was used to calculate the two-photon absorption coefficient.

TL;DR: In this paper, the intensity variations of the inelastic background (I), of disorder induced Raman scattering from phonons (II) and of the SERS signal from adsorbed pyridine have been observed.

TL;DR: In this article, light propagation equations at crystal surfaces are solved in the longwavelength limit, fully accounting for surface anisotropy, inhomogeneity and non-locality of the dielectric susceptibility tensor.

TL;DR: In this paper, the temperature dependence of the magnetic susceptibility of single crystals of PrB 4, GdB 4, TbB 4, HoB 4 and TmB 4 was reported.

TL;DR: For half-filled and symmetrical impurity bands, the hopping conductivity problem is reduced to the directed percolation problem on random sites, which is solved by computer simulation.

TL;DR: In this article, the EXAFS structure measured above the K-edge of Fe in the disordered Fe80B20 alloy is reported and complete agreement with X-ray diffraction results in the position of the first neighbours coordination shell when the asymmetry of the Radial Distribution Function (R.D.F.) into the EXASF formula is included.