| Issue |
EPL
Volume 89, Number 4, February 2010
|
|
|---|---|---|
| Article Number | 46002 | |
| Number of page(s) | 6 | |
| Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
| DOI | https://doi.org/10.1209/0295-5075/89/46002 | |
| Published online | 04 March 2010 | |
Dislocation roughening in quantum crystals
1
Department of Engineering Science and Physics, CSI, CUNY - Staten Island, NY 10314, USA
2
Department of Physics, CCNY CUNY - New York, NY 10031, USA
Corresponding author: Anatoly.Kuklov@csi.cuny.edu
Received:
13
November
2009
Accepted:
3
February
2010
We address generic behavior of quantum dislocations in almost ideal crystals. It is proven that the combination of arbitrary small Peierls potential and Coulomb-type elastic interaction between dislocation kinks prevents quantum roughening of dislocations. Thermally created kinks induce classical roughening which leads to softening of crystal shear modulus at temperatures comparable to the kink energy. This effect is discussed in the context of the shear modulus softening observed by Day & Beamish in solid 4He.
PACS: 67.80.bd – Superfluidity in solid 4He, supersolid 4He / 67.80.-s – Quantum solids / 05.30.Jp – Boson systems
© EPLA, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.