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Observation of higher order facets on He-3 crystals.

Research output: Contribution to journalJournal article

Published

  • Viktor Tsepelin
  • Harry Alles
  • A. Babkin
  • J. P. H. Harme
  • Reyer Jochemsen
  • Alexander Y. Parshin
  • G. Tvalashvili
Journal publication date02/2001
JournalPhysical Review Letters
Journal number6
Volume86
Number of pages4
Pages1042-1045
Original languageEnglish

Abstract

Faceting has been observed on He-3 crystals investigated with a low-temperature Fabry-Perot interferometer. Nine types of facets were clearly identified during growth of a bec-He-3 single crystal at a temperature of 0.55 mK, while previously only three types of facets have been seen. Because of the weak coupling between the liquid-solid interface and the solid lattice in He-3 the facets: are apparently too small to be observed in equilibrium. The number of facets: observed in our experimental conditions is consistent with the theory of dynamic roughening.