1 - 10 of 10 articles
A scaling parameter for He II thermal counterflow is developed from a consideration of the stability of the normal fluid component in the presence of superfluid vortex production. Observations of superfluid “entrainment” are combined with a reinterpretation of the “mutual friction force” to...
Low-frequency electroconductivity under magnetic breakdown conditions is investigated in the two qualitatively different situations: (a) coherent and (b) stochastic. In the former situation (a) the consideration is fulfilled in terms of the incidental magnetic breakdown spectrum of electrons. In...
Measurements have been made in the temperature range 0.5–5 K of the specific heats of pure solid H2, pure solid D2, and four solid mixtures of H2 and D2 with D2 fractions between 15 and 95%, all of which systems had low concentrationc of molecules in the rotational stateJ=1. For the H2,c=0.0023,...
It is shown that the method which Brandt, Pesch, and Tewordt used to solve the Gor'kov equations leads to a physically unacceptable result for the ultrasonic absorption rate in the clean limit. To account for this failure we examined the semiclassical approximation. We found that this...
Making use of the two-band model of the itinerant antiferromagnetism, we calculate the wave-vector-dependent paramagnetic susceptibility (i.e., the fluctuation propagator of the order parameter) and the ultrasonic attenuation coefficient above the Neel temperatureT
.We distinguish two regions...
A number of simple models are discussed for the magnetic permeability behavior of type-II superconductors. It turns out that the London-Bean model extended with a surface barrier as discussed by Ullmaier and by Wipf, though it gives a satisfactory description of the alternating current losses,...
Spin echo techniques have been used to study the diffusion of3He in liquid isotopic mixtures with molar concentrations in the range fromX
3=0.850 over a temperature range from ∼ 3.0 to ∼ 0.4 K. AboveT
λ the diffusive behavior is very similar to that of pure3He, although there is an...
The superconducting transition temperature for a number of A15 compounds has been determined as a function of hydrostatic pressure up to 25 kbar. The observed pressure dependences are compared with the predictions of a number of correlations between Tc and volume derived from zero-pressure data....
Specific heats of solid xenon were measured between 110 and 223 K in a closed pressure vessel. In this temperature interval the pressure increased from the vapor pressure of the solid at 110 K to about 1.7 kbar at the melting point. After a small correction for the nonrigidity of the container,...
The influence of the form of the phonon spectrum on the superconducting transition temperatureT
under the usual pairing mechanism is investigated. The coupling constant λ, which determinesT
in the two-phonon-peak and acoustic dispersion models, is calculated, and its dependence on the usual...
Read and print from thousands of top scholarly journals.
Continue with Facebook
Sign up with Google
Log in with Microsoft
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Sign Up Log In
To subscribe to email alerts, please log in first, or sign up for a DeepDyve account if you don’t already have one.
To get new article updates from a journal on your personalized homepage, please log in first, or sign up for a DeepDyve account if you don’t already have one.