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Recently, the low-temperature dielectric susceptibility of several multicomponent glasses was found to vary strongly with applied dc magnetic field. In this paper we present the first measurements of the low-temperature elastic susceptibility of glasses in magnetic fields. Mechanical double...
We report measurements of the specific heat of helium-4 confined to very uniform 8-micron diameter cylinders and to 0.26-micron diameter Anopore cylinders in the temperature region near the lambda point. The data allow improved tests of the emerging theory of finite size phenomena and cross-over...
We present a generalized Gross–Pitaevskii equation that describes the dissipative dynamics of a trapped partially Bose-condensed gas. It takes the form of a complex nonlinear Schrödinger equation with noise. We consider an approximation to this Langevin field equation that preserves the correct...
The effect of wall scattering on transport in dilute degenerate 3He–4He mixtures in quasi-2D flow channels or films is discussed. The calculation of the quasiparticle mean free path combines particle–wall and particle–particle collisions including the interference between them. The spin...
Glasslike anomalies of low-temperature thermal properties were observed for the polycrystalline Nb37Ti63 alloy and Nb37Ti63 doped with deuterium. A giant heat release effect was found in (Nb-Ti)92D8 corresponding to a spectral density of two level systems of 7.8·1045 J−1 m−3. After rapid cooling...
The Eighth Eugene Feenberg Medal is awarded to Philippe Nozières in recognition of his many pathbreaking contributions to many-body theory, including• His definitive work on the properties of the free electron gas, in particular in the region of realistic metallic densities,• his rigorous...
We developed a cryostat for optical observations at ultralow temperatures and in strong magnetic fields. The optical system consisted of a LED, a light transmission path and a CCD chip, with all components installed inside the inner vacuum can of the cryostat. We have been able to cool a 3He...
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