1 - 10 of 10 articles
Previous1H NMR results on HD impurities in solid H2 samples of low ortho concentration (X≲0.01) are reexamined, resulting in a different interpretation of the spin-spin relaxation timeT
2. The relaxation time is found to be measured by using short rf pulses rather than the long (100–120 µsec)...
The variation of the Landau parameters with density and hard-core diameter is calculated for liquid helium using interparticle potentials composed of a hard core followed by a combination of a repulsive and an attractive Gaussian potential, and a hard core followed by a Lennard-Jones potential....
The Eliashberg equations for an anisotropic superconductor containing Kondo impurities are approximated analytically using the square well model for the electron-phonon interaction. Anisotropy is incorporated via a separable model and the impurities are treated within the Matsuura, Ichinose, and...
Temperature structures generated in a thin-film superconducting bridge through dissipation of Joule energy can be imaged by low-temperature scanning electron microscopy (LTSEM). Two voltage peaks are obtained at the boundaries of the hotspot, where the temperature profile passes through the...
In a thin-film superconducting bridge a stable temperature structure (hotspot) can be generated by means of dissipation of Joule energy. This stable dissipative structure results from the S-shaped character of the resistance-temperature curve. The analogy between the generation of this...
Indium has a number of properties that make it an attractive material for nuclear cooling. A small test refrigerator of indium has been constructed and has cooled melting
He to 0.9 mK. Its performance demonstrates the favorable comparison of indium with PrNi5 for two-stage refrigerators. From...
A simple model for the rotating two-fluid system with cylindrical symmetry is examined. Separable solutions for the rates of rotation are found. These solutions have a time-invariant spatial dependence of the rotation rates, whose overall scale
$$\tilde \Omega _s (t)$$
evolves with time...
Symmetric tunneling junctions with 4000-Å-thick Pb electrodes and polycrystalline insulating barriers of Lu(OH)3, Er(OH)3, and Ho(OH)3 have been fabricated. In bulk, these three rare earth trihydroxides are nonmagnetic, antiferromagnetic (T
N<1.1 K), and ferromagnetic (Tc=2.54 K), respectively....
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