1 - 10 of 11 articles
Rough surface effects on p-wave Fermi superfluids are discussed on the basis of our recently proposed quasi-classical theory that can treat in a unified way the surface scattering ranging from the specular limit to the diffusive limit. We show how the transition temperature of the ABM state in a...
Second sound in superfluid helium is made up of scalar temperature and vector convective velocity fields. The local sound velocity is altered by these fields, leading to finite amplitude effects. The vector convective field and the direction of propagation are colinear for infinite plane waves...
The specific heat C(T) of the monoclinic RbDy(WO
crystal has been studied at very low temperatures 0.2≤T≤1.9 K and in magnetic fields 0≤H≤0.38 T. The Neel temperature was shown to be equal to TN = 0.818 ± 0.005 K. The experimental value of the effective exchange parameter was obtained to...
We describe the theory, design, fabrication, and performance of a super fluid
He device which is the analog of the superconducting RF SQUID. This device is a sensitive rotation detector and is used to sense the rotation of the Earth. We also describe the experimental developments and...
We report an investigation of the intrinsic properties of vibrating wires made of different materials at low temperatures ≈ 10 mK
We have measured thermal properties of Neutron Transmutation Doped Ge (type #23 from E. E. Haller) at very low temperatures (down to 20 mK). Both R versus T characteristics and thermal decoupling were considered. We show that, for our sample, the thermal decoupling can be well described with the...
The magnetism of the 5d metals W and Re is investigated with the method of weak localization. We studied W on the surface of Au and Re on the surface of Ag. For both systems the impurity thicknesses are in the range between 1/100 of a monolayer (single impurities) and one monolayer. For single W...
A comprehensive analytical theory is presented for non-hysteretic RF SQUIDs operating in the adiabatic mode in the presence of large thermal fluctuations. When β ≪ 1 (β = 2πLIc/Φ0
is the hysteresis parameter, L is the SQUID inductance, Ic
is the critical current of the Josephson junction, and Φ...
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