Showing papers in "Solid State Communications in 1972"

TL;DR: The role of the phase in the second order smectic A↔ nematic transition is similar to the role of phase functions in superconductors as mentioned in this paper, where twist and bend distortions correspond to magnetic fields.

TL;DR: In this article, the authors compare experimentally measured critical temperatures with those calculated using the McMillan equation and found that this equation gives T c quite accurately for all these materials when the average phonon energy is defined in one particular way.

TL;DR: In this paper, the infrared spectra of the solid solution, (Mn, Fe)3O4, were examined and interpreted based on the spectral properties of the end members of the solution.

TL;DR: RefReflection spectra of CdxHg1-xTe single crystals with 0 ≤ x ≤ 0.54 were measured in the spectral region from 1000 cm −1 to 25 cm−1 at 77 K and 300 K as discussed by the authors.

TL;DR: In this article, optical measurements were performed near the fundamental absorption edge for thin polycrystalline films with the entire region of composition in the GaNInN quasi-binary system.

TL;DR: Using a triple Raman spectrometer, the authors observed the rigid-layer E 2 g 2 mode in hexagonal MoS 2, and the interlayer forces were shown to be about 100 times weaker than the intralayer forces.

TL;DR: In this paper, it was shown that the residual depolarization field in a ferroelectric thin film which arises from the incomplete cancellation of polarization and compensation charge in a semiconducting electrode, introduces modifications in the spontaneous polarization and transition temperature.

TL;DR: In this article, the energy levels and level widths of sorbed gases (H 2, N 2, CO, CO 2 and O 2 ) on Ti were analyzed and shown to dissociate into Ti/0 + Ti/C upon adsorption.

TL;DR: In this paper, the adsorption of a monolayer of hexadecyltrimethylammonium bromide (CTAB) on glass-slides allows the preparation of monocrystal of p-n -methoxybenzilidene-p -butylaniline (MBBA) oriented either prependicularly to surfaces or in a direction parallel to surfaces (planar anchorage).

TL;DR: In this paper, the theory of Hohenberg and Kohn was generalized to the case of a polarized electron gas, and a gradient expansion of the energy functional was developed to investigate the effect of ferromagnetism on work function.

TL;DR: In this paper, the reentrant superconducting normal phase boundary of the ( La, Ce)Al2 system is reported, and the pair breaking parameter deduced from the data increases with decreasing temperature as (-ln T) between 0.1 and 3.30°K.

TL;DR: The vibrational frequencies of alkali metal cations in their equilibrium positions in borate, phosphate, germanate, silicate and vanadate alkali oxide glasses have been observed as cation mass dependent bands in the far-i.r. spectra of these vitreous systems as discussed by the authors.

TL;DR: The binding energy of the excitonic molecule is calculated as a function of the mass ratio m e m h as mentioned in this paper, and it is shown that the molecule should be stable for any value of the maximum mass ratio.

TL;DR: In this paper, the integrated Raman scattering cross-section in BaTiO3 has been measured near and above the ferroelectric phase transition as a function of temperature and the results indicate that there is disorder which breaks the crystal inversion symmetry in the cubic phase of Ba TiO3.

TL;DR: In this article, the short-range correlation between electrons with antiparallel spins is considered and the electron-electron ladder interactions are shown to be important for the short range correlation in the metallic and lower densities of electrons.

TL;DR: The major part of the surface energy of solids, particularly of metals, is due to the shift in zero-point energy of the electron-ion plasma oscillations when the free surface is created as mentioned in this paper.

TL;DR: In this article, the magnetic susceptibility of a series of tetragonal compounds of general formula (C n H 2 n +1 NH 3 ) 2 MnCl 4 (n = 1,2,3,…) was measured.

TL;DR: In this article, the authors used the Landau-Devonshire theory of perovskite ferroelectrics to explain the morphotropic phase transition in the ceramic solid solutions Pb(Zr, Ti) O3.

TL;DR: In this paper, the valence bands of Cu, Ag and Ni have been obtained by X-ray photoemission spectroscopy (XPS) with a resolution of ≈ 0.5 eV.

TL;DR: In this article, the one-phonon fine structure of silicon at room temperature is fully obtained and the two-photon structure is also obtained, which includes the most intense broad band observed by Parker et al. and weak broad bands not observed by them.

TL;DR: In this article, the minority carrier lifetime is measured in p-type Ge up to a majority carrier concentration of 10 19 cm −3 using the photoconductive effect and the photo-magneto-electric effect.

TL;DR: In this paper, the sharp doublet emission due to excitons bound to neutral acceptors in nominally undoped indium phosphide was shown to be due to zinc, and a similar, though shallower exciton spectrum was obtained for the deeper acceptor cadmium.

TL;DR: In this article, the effective potential and force acting on a moving charge near a metal surface are calculated, taking into account dynamical effects due to the finite mass and velocity of the charge.

TL;DR: In this paper, the donor levels of Ga, In, Cl, and Br in CdTe are associated with conduction band minima lying above the lowest minimum at Γ(k = 0).

TL;DR: The ground state of thulium vanadate is a non-Kramers doublet which is split by a Jahn-Teller distortion at T D = 2.1 K as discussed by the authors.

TL;DR: In this article, the authors measured the sheet Hall coefficients and resistivities of n-type Si layers doped with shallow donors produced by proton bombardment and determined the donor ionization energy.

TL;DR: In this paper, the authors derived an energy level 1 scheme of the Sm monochalcogenides using a thermochemical process and concluded that the semiconductor- metal transformation is due to a pressure induced Sm 2+ → Sm 3+ transition and is intrinsic in nature.

TL;DR: In this article, the magnetoelastic constants and values for the spin wave energy gaps on the frozen lattice model were deduced from the data, and the resonance modes are excited in c-plane platelets of the easy-plane weak ferromagnets α-−Fe2O3 and FeBO3 by means of an rf magnetic field.

TL;DR: In this article, the spectral dependence of the first order Raman scattering cross section of Ge at room and liquid nitrogen temperatures in the energy region containing the E 1 and E 1 + Δ 1 optical gaps was studied.

TL;DR: In this paper, the optical constants n and k of magnetite have been determined in the photon energy region between 1 and 3 eV for temperatures between 77 and 300 K using reflectivity measurements.