Recent Experimental Studies on Solid 4He
MHW Chan - Journal of Low Temperature Physics, 2021 - Springer
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Overview on Solid 4He and the Issue of Supersolidity
Here we provide an overview of the status of the field of solid 4 He with a focus on the recent
theoretical and experimental activities stimulated by the 2004 experiments of Kim and Chan …
theoretical and experimental activities stimulated by the 2004 experiments of Kim and Chan …
Evidence of supersolidity in rotating solid helium
Supersolidity, the appearance of zero-viscosity flow in solids, was first indicated in helium-4
torsional oscillator (TO) experiments. In this apparatus, the irrotationality of the superfluid …
torsional oscillator (TO) experiments. In this apparatus, the irrotationality of the superfluid …
Unaffected nonclassical response of solid 4 He under elastic modulus variation
The superflow in solid helium was detected by a decrease in the resonant period of a
torsional oscillator (TO) below 0.2 K. Recently, the shear modulus of solid helium has shown …
torsional oscillator (TO) below 0.2 K. Recently, the shear modulus of solid helium has shown …
Observation of hidden phases in supersolid 4He
Liquid helium becomes a superfluid and flows with zero viscosity at low temperatures.
Superfluidity is manifested by a failure to rotate, as its mass is decoupled from the rotation of …
Superfluidity is manifested by a failure to rotate, as its mass is decoupled from the rotation of …
Staircaselike suppression of supersolidity under rotation
There are a number of distinct signatures of superfluids, one of which is the appearance of
quantized vortices. There have been some attempts to understand the putative supersolid …
quantized vortices. There have been some attempts to understand the putative supersolid …
Dislocation model of the low-temperature elastic anomalies of solid helium
E Varoquaux - Physical Review B—Condensed Matter and Materials …, 2012 - APS
The elastic properties of hexagonal close-packed 4 He samples have been shown to display
various anomalies. As the temperature is lowered below∼ 0.2 K, the elastic shear modulus …
various anomalies. As the temperature is lowered below∼ 0.2 K, the elastic shear modulus …
Threefold reduction in thermal conductivity of vycor glass due to adsorption of liquid 4He
We report thermal conductivity measurements of porous Vycor glass when it is empty and
when the pores are filled with helium between 0.06 and 0.5 K. The filling of liquid 3 He and …
when the pores are filled with helium between 0.06 and 0.5 K. The filling of liquid 3 He and …
NMR investigation of the low-temperature dynamics of solid He doped with He impurities
The lattice dynamics of solid 4 He has been explored using pulsed NMR methods to study
the motion of 3 He impurities in the temperature range (0.05–0.20 K) where experiments …
the motion of 3 He impurities in the temperature range (0.05–0.20 K) where experiments …
Effects of impurity on solid studied by compound torsional oscillator
Frequency shifts and dissipation of a compound torsional oscillator induced by solid He 4
samples containing He 3 impurity concentrations (x 3= 0.3, 3, 6, 12, and 25 in units of 10-6) …
samples containing He 3 impurity concentrations (x 3= 0.3, 3, 6, 12, and 25 in units of 10-6) …