Simulation and understanding of atomic and molecular quantum crystals
Quantum crystals abound in the whole range of solid-state species. Below a certain
threshold temperature the physical behavior of rare gases (He 4 and Ne), molecular solids …
threshold temperature the physical behavior of rare gases (He 4 and Ne), molecular solids …
Holographic supersolids
M Baggioli, G Frangi - Journal of High Energy Physics, 2022 - Springer
A bstract A supersolid is a system that presents long-range order and shear rigidity as a
solid but which also supports a non-dissipative superflow as a superfluid. From an effective …
solid but which also supports a non-dissipative superflow as a superfluid. From an effective …
Upper limit of supersolidity in solid helium
The resonant period drop observed at low temperatures in torsional oscillators containing
solid helium had been interpreted as a signature of a supersolid. However, it was found that …
solid helium had been interpreted as a signature of a supersolid. However, it was found that …
Dislocation-position fluctuations in solid 4He as collective variables in a quantum crystal
Quantum behavior at mesoscopic length scales is of significant interest, both from a
fundamental-physics standpoint, as well as in the context of technological advances. In this …
fundamental-physics standpoint, as well as in the context of technological advances. In this …
Dislocation Mobility in a Quantum Crystal: The Case of Solid
We investigate the structure and mobility of dislocations in hcp He 4 crystals. In addition to
fully characterizing the five elastic constants of this system, we obtain direct insight into …
fully characterizing the five elastic constants of this system, we obtain direct insight into …
Low-frequency acoustics in solid at low temperature
Y Mukharsky, A Penzev, E Varoquaux - Physical Review B—Condensed Matter …, 2009 - APS
The elastic properties of hcp H 4 e samples have been investigated using low-frequency (20
Hz to 20 kHz) high sensitivity sound transducers. In agreement with the findings of other …
Hz to 20 kHz) high sensitivity sound transducers. In agreement with the findings of other …
Elastic constants of solid He under pressure: Diffusion Monte Carlo study
C Cazorla, Y Lutsyshyn, J Boronat - Physical Review B—Condensed Matter …, 2012 - APS
We study the elasticity of perfect solid 4 He at zero temperature using the diffusion Monte
Carlo method and a realistic semiempirical pairwise potential to describe the He-He …
Carlo method and a realistic semiempirical pairwise potential to describe the He-He …
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 …
Sound velocities of hexagonal close-packed H and He under pressure
YA Freiman, A Grechnev, SM Tretyak… - Physical Review B …, 2013 - APS
Bulk, shear, and compressional aggregate sound velocities of hydrogen and helium in the
close-packed hexagonal structure are calculated over a wide pressure range using two …
close-packed hexagonal structure are calculated over a wide pressure range using two …
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 …