Study of the 4He crystal surface
K.O. Keshishev, V.I. Marchenko, and D.B. Shemyatikhin
TL;DR
This study investigates the behavior of helium crystal surfaces near the (0001) face, focusing on contact angle criticality, interface energy anisotropy, and temperature-dependent step energy in the 0.5-0.9 K range.
Contribution
It provides new experimental data on contact angle critical behavior, interface energy anisotropy, and elementary-step energy temperature dependence for helium crystals.
Findings
Detected anisotropy in crystal-glass interface energy.
Measured temperature dependence of elementary-step energy.
Analyzed critical behavior of contact angle.
Abstract
The evolution of the meniscus of a helium crystal near the (0001) face is traced during a change in the boundary conditions at the chamber wall in the temperature range 0.5-0.9 K. The critical behavior of the contact angle is studied. An anisotropy is detected in the crystal-glass interface energy. New data on the temperature dependence of the elementary-step energy are obtained.
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