1 - 10 of 12 articles
The temperature dependence of the Knight shift is studied for normal as well as superconducting small particles. We take into account the discreteness of the energy levels and the spin-orbit coupling due to the particle surface. The theory is capable of explaining the size and temperature...
Detailed results are presented of investigations on the galvano- and thermomagnetic coefficients of pure Cd (ρ
, and γ
). The transverse resistivity ρ
is almost perfectly quadratic in magnetic field (B
) at the lowest temperatures, thus throwing doubt on the...
The observed difference in plasticity in the normal and superconducting states in metals and alloys has been attributed by most authors to an electron-dislocation interaction. Granato has associated this interaction with a dislocation damping property. We suggest a different model, in which the...
A kinetic theory of anisotropic Fermi superfluids is presented. The kinetic equation for the quasiparticle matrix distribution function is derived from the microscopic theory, supplemented by definitions of the relevant densities and currents. The static spin susceptibility, the normal fluid...
Recent experiments on the low-temperature magnetic susceptibility χ of very dilute concentrations of iron impurities in copper show a significant contribution proportional to the square of the iron impurity concentrationc. The two explanations that have been proposed for thisc
The microwave surface resistance of pure niobium has been measured in magnetic fields up toH
. The surface resistance in the mixed state state was found to depend strongly on the mean free path, in contrast to the earlier theory of Caroli and Maki but in agreement with the recent theoretical...
The spin diffusion coefficient tensors are calculated in the A and B phases of liquid
He in the θLτ
<1 regime by using the Kubo formula approach. The spin wave dispersions are also obtained in the presence of diffusive flow of the normal component. The results agree with Combescot's results...
The theory of the structural properties of the A-15 compounds is developed starting with a picture of linear chains of atoms of the transition elements. The twofold-degenerate electronic term is shifted and split when interchain transfer is taken into account. A fine structure of the electronic...
The attenuation of longitudinal 1-GHz phonons was measured as a function of temperature in liquid
He at svp and at 23 bar as well as in hcp
He at 36 bar. The lifetime of the phonons which were generated by stimulated Brillouin scattering was determined optically by a probing light pulse. The...
Rotational states as functions of pressure for H2, D2, T2 HD, and HT molecules are calculated in the corresponding molecular solids. Sudden transitions from spherically symmetric rotational states occur in para-H2, para-T2, ortho-D2, and in HD and HT as the pressure increases. Only the predicted...
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