1 - 10 of 12 articles
Experimental studies of the nuclear spin-lattice relaxation times in BCC helium three are reported for high molar volumes and low temperatures close to the minimum in the melting curve. The results show the existence of a new relaxation mechanism at low temperatures with an approximately linear...
An attempt is made to explain the pressure dependence of the superconducting transition temperatureT
of aluminum. The model calculation is essentially the same as that of Ott and Sorbello, with the difference that here the effect of zone boundaries on the density of states is included. The...
When transport in a Fermi liquid is treated in the relaxation time approximation, the quasiparticle energy appearing in the local equilibrium distribution must have the form determined by the nonequilibrium distribution function. Sometimes this requirement is overlooked and the equilibrium...
A microscopic theory is developed of finite-size effects in sintered metallic powders. In particular a model is constructed for the low frequency vibrational modes. It is argued that the bonding between atoms on adjacent surfaces of neighboring grains is extremely weak, 10−3–10−4 of its bulk...
The magnetoresistance effect in bismuth has been studied at the very low temperature limit when the lattice scattering is dominant in solids. Results show that the magnetoresistance oscillates with the dc magnetic field and displays sharp, cusplike discontinuities due to the nonlinear and...
In order to investigate the normal state spin fluctuation behavior of UPt3, we have measured the low temperature resistivity and specific heat C of U(Pt0.8Pd0.2)3, which we find to be close to the phase stability boundary for the hexagonal UPt3 structure. The evidence for spin fluctuations...
The thermal conductivity of compressed exfoliated graphite was measured in the directions parallel (K
) and normal (K
) to the rolling plane, in the temperature range of 0.2–3 K. The temperature dependence was determined in both cases. ForK=aT
in the temperature range of 0.2–0.7 K we get...
Time correlation functions for the transport coefficients in the linear Landau-Khalatnikov equations are derived on the basis of a formal theory. These Green-Kubo expressions are then explicitly evaluated for a dilute superfluid and the resulting transport coefficients are shown to be identical...
The possibility of superconductivity is considered for a strongly disordered metal approaching the Anderson transition. A microscopic derivation of the coefficients of the Ginzburg-Landau expansion is given for a system in the vicinity of the mobility edge. The localization transition is...
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