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The Kohler slope of the linear magnetoresistance of potassium films measured in the Sondheimer geometry at 4.2 K depends on κ, the ratio of the film thickness to electron mean free path. The maximum value with a value of 0.1 occurs at κ=1. Calculations show that the slope decreases slowly from...
High-resolution measurements of ρη are reported for liquid4He and3He-4He mixtures at saturated vapor pressures between 1.2 and 4.2 K with particular emphasis on the superfluid transition. Here ρ is the mass density, η the shear viscosity, and in the superfluid phase both ρ and η are the...
The current-induced transition from the superconducting to the normal state in whiskers from Pb,Pb-In andPb-Bi has been investigated. Very close to the critical temperatureT
the voltage-current(V-I) characteristics show linear portions that are not separated by voltage jumps. For lower...
The elementary excitations of4He clusters containingN atoms are investigated by solving the equations of the random phase approximation (RPA) with a phenomenological effective interaction. The calculations were done for 40≦N≦728. The effects of the RPA correlations are explicitly discussed....
It is shown that if the root-mean-square of the gradient of the phase fluctuation of either of the components exceeds the corresponding inverse of the coherence length or if the chemical potential exceeds
is the volume integrals of...
The longitudinal destruction of the superconducting state along a wire by an electrical subcritical current can occur if a strong enough thermal disturbance appears somewhere along the wire. The longitudinal expansion velocity of the normal phase along the wire is then strongly dependent on the...
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