Fig. 2
From: Non-glide effects and dislocation core fields in BCC metals
DFT calculation of the dislocation core trajectory and energy barrier under a non-glide pure shear stress. a Dislocation trajectory and (b) energy barrier between easy core configurations when no stress is applied (black data and curve) and when either a positive (blue) or a negative (red) non-glide pure shear stress is applied. The symbols are the result of NEB DFT calculations using \(\sigma =\,\pm1.2\) GPa taken as an example. The colored regions show typical regions of variation of the energy barrier when \(\sigma\) is either positive or negative. In (b), the dislocation position \(X\) along the \([\overline{1}\overline{1}2]\) direction is scaled by the distance between Peierls valleys, \(d\)
