Stress induced dislocation roughening -- phase transition in 1d at finite temperature

Details Stress induced dislocation roughening -- phase transition in 1d at finite temperature Stress induced dislocation roughening -- phase transition in 1d at finite temperature

2011-02-27

arxiv.org/abs/1102.5522v2

PRL 106, 235302(2011)

Physics

Condensed Matter

Other Condensed Matter

4 revtex pages, 5 figures. Replaced with the published version

Scientific paper

We present an example of a generically forbidden phase transition in 1d at finite temperature -- stress induced and thermally assisted roughening of a superclimbing dislocation in a Peierls potential. We also argue that such roughening is behind the strong suppression of the superflow through solid \he4 in a narrow temperature range recently observed by Ray and Hallock (Phys.Rev. Lett. {\bf 105}, 145301 (2010)).

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