Anisotropy of Surface Stiffness, Growth Kinetics and Roughening Transition in 4He

  • Konstantin Keshishev
  • Olga Andreeva
Part of the NATO ASI Series book series (NSSB, volume 257)


The solid-superfluid interface in 4He has attracted the attention of theoreticians and experimentalists during the last decade. Many essential problems concerning the thermodynamics and growth kinetics of the interface are still unsolved. The surface free energy α and the surface stiffness \( \tilde{\alpha }{{i}_{ij}} \)α + +∂2 α/∂θ iθ j ( i=1,2; θ i are the angles which determine the crystallographic orientahiori of the surface) determine the equilibrium properties of the interface. The growth dynamics are characterized by the kinetic growth coefficient K ≡ m v/δµ ( v is the growth rate along the normal to the surface \( \vec{n} \), m is the 4He atomic mass, and δµ is the difference between the chemical potentials of the two phases) which is also a function of the surface orientation θ i.


Angular Dependence Surface Free Energy Diagonal Component Growth Coefficient Surface Stiffness 
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Copyright information

© Plenum Press, New York 1991

Authors and Affiliations

  • Konstantin Keshishev
    • 1
  • Olga Andreeva
    • 1
  1. 1.Institute for Physical ProblemsUSSR Academy of SciencesMoscowUSSR

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