Vacancy distribution in a rotating solid 4He
Institute of Metal Science, Equipment and Technologies with Center for Hydro and Aerodynamics, Bulgarian Academy of Sciences - Sofia, Bulgaria, EU
Accepted: 9 February 2012
Vacancy distribution is considered in a rotating solid 4He immersed in a superfluid helium-II. Vacancies are considered as a quasiparticle gas of vacancions with a gap dispersion law. It is shown that the radial distribution depends on Poisson's ratio and practically not on Young's modulus. The treatment is based on a nonlinear theory unifying the elasticity theory equations and a Boltzmann-type transport equation valid for arbitrary angular velocities. The situation simulates, in a sense, the Kim and Chan rotational experiments where nonclassical inertia was observed. The model cannot be applied to solid 3He. We do not presuppose in this work any supersolid fraction.
PACS: 67.80.-s – Quantum solids / 67.80.K- – Other supersolids / 61.72.jd – Vacancies
© EPLA, 2012