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cond-mat.soft2021
Anomalously Small Excitation Gaps as a Precursor of Dislocation Core Superfluidity in Solid Helium-4
Anatoly Kuklov, Emil Polturak, Nikolay Prokof'ev +1
In the vicinity of the insulator-to-superfluid quantum phase transition in its core, a dislocation in a He-4 crystal supports particle-hole excitations with arbitrary small gaps. T…
cond-mat.other2021
Thermal and structural properties of topological defects in solid Helium-4: Strain induced martensitic transformation from hcp to fc orthorhombic lattice
Anatoly Kuklov, Emil Polturak, Nikolay Prokof'ev +1
Several experimental studies have reported thermally activated behavior of the mechanical response of solid Helium-4 which does not fit into the model of thermally activated Frenke…