Showing papers in "Journal of Physics and Chemistry of Solids in 1956"

TL;DR: In this article, energy-band calculations for the three valence bands in silicon and germanium in terms of the cyclotron resonance parameters are made for the first term of a perturbation expansion of the k.p and spin-orbit perturbations.

TL;DR: In this article, the energy levels and wave functions of a hydrogen atom in a very strong magnetic field were studied for a semiconductor of high dielectric constant and low effective mass.

TL;DR: In this article, the magnetic contribution to the specific heat of binary and antiferromagnetic compounds was calculated using the Debye function and the exchange integral of W NkT c was calculated.

TL;DR: The relative volume decrease as a function of pressure has been measured for solid He, H2, D2, and Ne at 4°K, for N2 and A at 65°K and for A at 77°K by the direct piston displacement method of B ridgman as mentioned in this paper.

TL;DR: In this article, the effective mass approximation for degenerate electronic energy bands is applied to the interaction of electrons and holes in an insulator, and it is shown that bound exciton states result from this treatment.

TL;DR: In this article, it was shown that the energy spectrum of spin waves in a ferromagnetic body of finite size is very different from the spectrum in an infinitely extended body, and that a degeneracy exists between the spin wave of wave vector k = 0 and a manifold of short wavelength spin waves.

TL;DR: In this paper, it is shown that, with the possible exception of hydrogen, molecules physically adsorbed on the surface form a reservoir from which chemisorption can occur, both for reaction on a uniform surface as well as for reaction at surface singularities such as grain boundaries or lattice steps.

TL;DR: In this paper, the authors derived term schemes for the impurities from the position of the excitation bands and the assumption that the 4p level is the same for all of the group-III impurities.

TL;DR: In this paper, the anomalous de hautes temperatures en phase α were explained by an excitation des electrons de la bande pleine de liaison. Butteau et al.

TL;DR: In this article, the Hall constant of two specimens of InSb in very strong magnetic fields was measured and it was found that the effect of the magnetic field on the electron mobility is larger than is expected on the basis of the usual theories of magnetoresistance.

TL;DR: In this article, a general theory based on the Nordheim approximation is given for the residual resistivity of binary solid solutions with short-range order but no long-range ordering, which predicts an 18 per cent increase in resistivity with shortrange order just above the ordering temperature, in agreement with experiment.

TL;DR: In this article, the anisotropy of the paramagnetic absorption spectrum of manganous ion in a natural crystal of cubic zinc sulfide has been found to be unusually pronounced when quartic terms in the crystalline electric field predominate.

TL;DR: In this paper, it was shown that small additions of an element or compound lead to substantial changes of superconducting transition temperature, and the conditions make it likely that the main effect is the change of electron concentration.

TL;DR: The electrical resistivity of Cu 3 Au has been measured at 77°K after quenches from various temperatures above T c, the critical temperature for long-range order as mentioned in this paper.

TL;DR: In this article, the infra-red absorption spectra due to neutral, n-type, impurity centers (P, As, Sb) in silicon have been measured at liquid helium temperature, and ionization energies and term schemes for these materials have been determined from the data.

TL;DR: In this paper, it was shown that photoelectric emission from the upper edge of the valence band lying about 6 eV below the vacuum level can be attributed to the electron affinity of CsI.

TL;DR: In this paper, the ionic conductivity and the self-diffusion coefficient of silver have been measured in single crystals between 20 and 380°C, assuming that divalent cadmium ions replace monovalent silver ions in the crystal lattice and introduce an equal number of silver-ion vacancies.

TL;DR: In this article, electrical resistivity measurements have been made on a series of nickel-palladium alloys and the resistivity reaches a maximum at approximately 70 atomic per cent palladium at 4.2°K, 77°K and 300°K.

TL;DR: In this paper, the formation of divacancies is described as a first step in the annealing of germanium acceptors and the second step involves formation of clusters of four, the activation energy for which is 2.8 eV.

TL;DR: In this paper, the magnetic properties of Ni-Pd alloys are discussed on the basis of the collective electron treatment of ferromagnetism and a series of further experimental investigations are suggested, including measurements of the specific heat at low temperatures, of the magnetization below the Curie point and in the presence of a strong magnetic field at low temperature, of composition and temperature variation of the electrical resistivity and of the effect of strong compression on the curie temperature of the Pd-rich alloys.

TL;DR: In this article, the effective number of conduction electrons calculated using a one-band model is compared with that obtained for the copper-nickel alloy system and a similarity in behavior is found.

TL;DR: In this article, the effect of hydrostatic pressures up to 300 atmospheres on the critical magnetic field of superconducting lead has been measured at a temperature slightly below the critical temperature.

TL;DR: In this paper, a theory of paramagnetic resonance in metals is constructed, based on a simultaneous solution of M axwell's equations and of the kinetic equation for the density operator.

TL;DR: In this article, the longitudinal magnetization and resistance of indium rods at the superconducting transition were measured under equilibrium conditions of large current, small magnetic field, and constant temperature.