1 - 10 of 83 articles
We report measurements of the surface resistance and skin depth in single crystals of the heavy electron superconductor URu2Si2. The measurements were made in all-copper helical resonators in the frequency range 0.19 GHz to 0.54 GHz with the ac fieldB ‖ a-axis and the induced current,J,...
We present the SQUID magnetometer working in a field of 11T that we recently developed to study transiently polarized liquid3He. Emphasis is on the problems posed by the high magnetic field..
Helium wetting and prewetting phenomena at temperatures T>0 are addressed. Emphasis is given to the weak-binding substrates Cs and H2, which have been predicted and observed to be nonwet and wet, respectively, by4He at low temperatures. Calculations of the wetting temperature TW and the...
A new application of third sound for the study of wave propagation in quasiperiodic systems has been developed. The advantages of the present method are: 1) Small attenuation of third sound and well-controlled fabrication of scatterers ensure the long phase-coherence length. 2) One- and...
We report measurements on the effects of4He coverage and pressure on the fourth sound propagation in superfluid3He in confined geometries of four different pore sizes.
The Zharkov-Silin Fermi Liquid theory of solutions of4He in non-superfluid liquid3He has been applied to the recent phase separation data of Nakamura et al. At zero pressure, the difference in binding between a4He atom in liquid4He and in liquid3He is smaller than previous estimates, and the4He...
The longitudinal spin diffusion coefficient and magnetization of a submonolayer coverage of
=0.0066 Å−2, in a thin adsorbed
He film has been measured as a function of temperature0.024 K ≤ T≤0.5 K and
He coverage0.21 Å
We report measurements of the asymmetry of the intensities of the quadrupolar fine structure of NMR lines in ferromagnetic MnSb down to 30 mK. The asymmetry ratios provide a means of measuring the temperature, and is an example of the use of population difference thermometry as a primary...
We have investigated the scattering of rotons as motivated by recent experiments with crossed roton beams. We assumed an excitation mediated interaction between rotons and used 2nd order perturbation theory to calculate scattering cross-sections as a function of total roton momentum. Comparison...
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