Mechanical and superfluid properties of dislocations in solid He4
| Autor: | Aleinikava, D., Dedits, E., Kuklov, A. B., Schmeltzer, D. |
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| Rok vydání: | 2008 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Dislocations are shown to be smooth at zero temperature because of the effective Coulomb-type interaction between kinks. Crossover to finite temperature rougnehing is suggested to be a mechanism responsible for the softening of \he4 shear modulus recently observed by Day and Beamish (Nature, {\bf 450}, 853 (2007)). We discuss also that strong suppresion of superfuidity along the dislocation core by thermal kinks can lead to locking in of the mechanical and superfluid responses. Comment: 4 pages with 2 figures |
| Databáze: | arXiv |
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