RT Journal Article
T1 Edge dislocations in crystal structures considered as traveling waves in discrete models
A1 Carpio Rodríguez, Ana María
A1 Bonilla, Luis L.
AB The static stress needed to depin a 2D edge dislocation, the lower dynamic stress needed to keep it moving, its velocity, and displacement vector profile are calculated from first principles. We use a simplified discrete model whose far field distortion tensor decays algebraically with distance as in the usual elasticity. Dislocation depinning in the strongly overdamped case (including the effect of fluctuations) is analytically described. N parallel edge dislocations whose average interdislocation distance divided by the Burgers vector of a single dislocation is L≫1 can depin a given one if N=O(L). Then a limiting dislocation density can be defined and calculated in simple cases.
PB American Physical Society
SN 0031-9007
YR 2003
FD 2003-04-04
LK https://hdl.handle.net/20.500.14352/49876
UL https://hdl.handle.net/20.500.14352/49876
LA eng
NO Carpio Rodríguez, A. M., Bonilla, L. L. «Edge Dislocations in Crystal Structures Considered as Traveling Waves in Discrete Models». Physical Review Letters, vol. 90, n.o 13, abril de 2003, p. 135502. DOI.org (Crossref), https://doi.org/10.1103/PhysRevLett.90.135502.
DS Docta Complutense
RD 18 abr 2025