1 - 10 of 14 articles
The results of an investigation of the superconducting and normal state physical properties of (LaNd)Sn3 alloys are reported. Superconducting state data are presented describing the depression of the superconducting transition temperature T
cwith Nd impurity concentration, the reduction of the...
The temperature and frequency dependences of the fluctuation conductivity of a dirty, layered superconductor are found. It is shown that fluctuations can be important over a wide temperature range in the case of a large impurity concentration and a small probability of electron interlayer hopping.
A theoretical study is presented of the lattice dynamics of the cubic phases of solid hydrogen and deuterium as a function of density. The calculations are performed in the self-consistent phonon approximation and include cubic three-phonon processes and higher anharmonic corrections. The...
Using MgO powder as a substrate, the magnetic relaxation of 3He and adsorption isotherms of 3He and Kr have been measured. Relaxation data as a function of coverage were obtained at temperatures of 2.0,2.7, 3.5, and 4.2 K, and as a function of temperature at coverages of x = 0.84 and 1.0...
The specific heats of UAs and the isostructural nonmagnetic homolog ThAs have been measured in the temperature range 5–300 K. While the latter compound displays a regular smooth curve C
p (T), UAs shows two sharp anomalies. The first anomaly, around 64 K, may be ascribed to the magnetic...
Half-harmonic generation in Josephson tunnel junctions and microbridges is investigated theoretically, numerically, and experimentally. It is found that such generation may take place both at zero voltage and on rf-induced steps in tunnel junctions, but not in microbridges. A simplified theory,...
The ground-state energy and liquid structure function of two-dimensional liquid 4He are calculated in the density range 0.028–0.075 Å−2, using the Lennard-Jones 6–12 potential. The optimal Jastrow function is first determined by a self-consistent paired-phonon calculation and then the...
The ground state energy and orbital magnetic susceptibility of a small-particle superconductor are calculated with the use of perturbation theory, which is expected to give correct results in the limit of small particle size, i.e., when the average one-electron energy level spacing Δ is much...
Pb1 ± x
Mo6 + y
S8 thin films (where x = 0.1 and 0.2; y = 0 and 0.35; M = La, Nd, Pr, Gd, Y, or U) were prepared by a dc getter sputtering method. The influence of doping elements on critical transition temperature T
c, initial slope [dH
c2/dT]Tc, and critical current density J
Superleak second-sound transducers, used to measure superfluid turbulence in a cavity, exhibit complex phenomena associated with vortex pinning at the pore sites. These phenomena could be used to study vortex pinning and motion in nucleopores.
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