Fig. 4: Carrier velocities.
From: Phonon-limited mobility for electrons and holes in highly-strained silicon
Band velocities along the three Cartesian directions for all relevant k points under 0%, 0.3%, and 1%-strain indicated on the right of the figure. The velocities in the x, y, and z directions are indicated with blue, orange, and red dots, respectively. The minimum and maximum of the zero-strain conduction and valence bands are indicated by Ec,0 and Ev,0, respectively. The continuous and dashed lines represent the velocity density of the longitudinal (vnk,x) and transverse (vnk,y, vnk,z) components, respectively. They have been computed using linear-tetrahedron method88 with steps of 25 meV.
