1 - 10 of 17 articles
High-frequency phonons (hω/k
B≳10 K) have been reflected on the solid side of a sodium fluoride-helium-4 interface. The reflectivity was measured as a function of helium film thickness and it was found that most of the change occurs below a pressure of 0.1 of the SVP at ∼1.1 K, when the helium...
The paramagnetic susceptibility of cerium magnesium nitrate (CMN) in varying states of hydration was measured between 1.4 and 4.2 K. An anomaly in the Curie law behavior of pure CMN observed near 2.2 K with an ac susceptibility bridge at 21 Hz is interpreted as an effect of spin-lattice...
The basal plane thermal conductivity of three highly oriented pyrolytic graphite samples was measured in the temperature region between 0.36 and 4.2 K in various magnetic fields up to 23 kG. Analysis shows that the measured thermal conductivity is simply the sum of the electronic and the lattice...
Theory of the phase transition of an itinerant electron antiferromagnet is similar to superconductivity theory, including singular contributions to the specific heat and other properties at the transition temperature. The effects of a small concentration of normal impurities, which are pair...
Measurements of the flux density distribution recorded directly with several microfield probes are reported. For weakly hysteretic samples marked differences of the profiles in increasing and decreasing fields are observed and attributed to the influence of the reversible magnetization. The...
A fully self-consistent Hartre-Fock theory, using the Coulomb interaction screened by the polarization insertions calculated in the self-consistent random-phase approximation, is applied to thed-dimensional, dense, charged Bose gas at temperatures close to the transition temperatureT
We suggest consistency checks on neutron scattering data on liquid helium under pressure. The theoretically calculated static structure functionS(k|P) leads to pressure dependence of the roton gap, momentum, and curvature in general agreement with experiment.
An imbalanceQ in the quasiparticle populations of thek>k
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