1 - 10 of 14 articles
The existence is discussed of a low temperature phase with “infinite susceptibility” in a Bose fluid in two dimensions and in thin films. In particular the high temperature approach to the relative phase transition is considered by a second-order theory based on the use of finite temperature...
The superconducting transition temperatures of several specimens of reduced SrTiO3 and of Nb-doped SrTiO3 have been investigated as functions of hydrostatic and uniaxial compressive stresses up to 1.8 kbars. Decreases inT
c as large as 0.12 K have been observed in specimens under hydrostatic...
The specific heats of GdCl3, GdBr3, and GdI3 were measured in the temperature ranges from 1.3° to 4.4° K, from 1.3° to 5.7° K, and from 1.5° to 5.7° K, respectively. Each of these salts was found to have a magnetic transition at low temperatures.
The velocity of flux tubes in thin superconducting films has been determined by measuring the time for their passing across the film. A legion of flux tubes has been pulsed in on the left side of a film carrying a current large enough to break the pinning. The arrival of the flux tubes on the...
A study of adiabatic compressional cooling of a two-phase mixture of solid and liquid He
has been made. Details of the experimental arrangement are given. Using a flexible elastic low temperature He
cell that is compressed by liquid He
and precooled by a continuously operating dilution...
The specific heat of an alloy of copper with 40 at. % nickel has been measured. The “constant” or anomalous term is seen to decrease as the temperature is reduced below 1.4° K.
The Curie-point anomaly in thea-axis linear thermal expansion coefficient of CuK2Cl4 · 2H2O (T
c=0.88° K) has been observed using the three-terminal capacitance technique. Length changes of the 3.8-mm single-crystal sample were determined to within approximately 0.1 Å. In the critical region our...
We look at a strongly interacting Bose gas in an attempt to understand the effects upon the physics of the phase transition of the interactions between the higher momentum excitations. At densities an order of magnitude below liquid helium, we find that these interactions are affecting the phase...
A classical model for the scattering of a small particle by a rectilinear vortex in liquid He II is studied for the purpose of explaining the experimental results of Steyert, Taylor, and Kitchens. Although many of their observations are accounted for, verification of the theory would require a...
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