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Exact results for the slip length and the surface impedance of a superfluid Fermi liquid are reported for the case of diffuse boundary scattering and compared with previous approximate results based on variational methods. We also derive upper and lower bounds on the slip length for a general...
We report a systematic study of the longitudinal relaxation timeT
1 for solid H2 samples with ortho concentrationX between 0.15 and 0.70 and for 0.1≲T≲2 K. It is over this temperature region that substantial orientational ordering takes place, which drastically affectsT
1. The measurements were...
It is shown that H2 precipitated into bubbles in copper undergoes ortho-para conversion. This conversion, at a rate of about 2%/h, and the hydrogen content are detected quantitatively by the time-dependent heat release associated with them. The heating is comparable to the time-dependent heat...
Using the de Haas-van Alphen (dHvA) effect, we have made a detailed investigation of the effective mass and g-factor of conduction electrons in cesium. A mass anisotropy of 21.6% is observed about a Fermi surface (FS) average value ofm*/m
=1.447±0.02. The g-factor, derived in a variety of...
The phenomenon of the penetration of a low-frequency weak magnetic field into a superconductor has stimulated extensive theoretical and experimental studies. These have led to important clarifications regarding the nature of the superconducting phase by, for example, making concrete the idea of...
A model is constructed to describe the current-voltage characteristics of phase-slip centers, taking into account the heat generated by the nonequilibrium quasiparticle current and the oscillating supercurrent. If the temperature rise is sufficient to reachT
,the description can be continued...
A simple model of the resistive state in a superconducting channel with a periodic array of inhomogeneities is considered. It is shown that the dynamic equations for the resistive state in this channel do not, in principle, determine a unique value of the Josephson oscillation period in the...
The time delayt
between the application of a supercritical electric current and the appearance of a resistive voltage has been studied in superconducting microbridges of indium. The samples were biased with a constant electric current, and the supercritical current was generated by irradiating...
Phase-slip centers in aluminum strips are analyzed in detail. Measurements have been performed on the spatial dependence of the electrochemical potential and the energy gap. Exponential decay of the quasiparticle potential is found, with a diffusion length that follows a (T
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