Plasticity in current-driven vortex lattices

Physical Review B - Condensed Matter and Materials Physics

Volumn 65, Issue 13, 2002, Pages 1-10

  Benetatos, Panayotis ^a   Marchetti, M Cristina ^b  

^a HAHN MEITNER INSTITUT   (Germany)

^b SYRACUSE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 33845394878     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.65.134517     Document Type: Article

References (33)

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23. No-slip boundary conditions for the displacement yield a stress of the form given in Eq. (2.12), but with the plus sign inside the square bracket replaced by a minus sign. In this case the stress is largest (in magnitude) at the inner and outer rims of the disk and vanishes in the interior. Plastic slip will occur first at the rims, and then propagate towards the interior of the disk as the current is increased. No-slip boundary conditions are relevant for the experimental geometry proposed in Ref. 8 of a Corbino disk with Bose glass contacts.
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27. The same symbol y is used here for the fugacity and below for the separation of a neutral pair of dislocations along the climb direction. There should be no confusion as the meaning of y will be clear from the context.
28. We have neglected the force arising from Peierls barriers to glide motion due to the periodicity of the lattice. In the Langevin equation for the separation of the dislocation pair in the glide direction considered below, this force only couples to gradients of the external stress.
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