Ab Initio Study of Strain Effects on the Quasiparticle Bands and Effective Masses in Silicon

Figure 2

Band structure of Si within DFT-LDA (dashed lines) and (solid lines) without strain (left) and with 2.5% uniaxial strain in the direction (right). The six originally degenerate conduction-band minima (left panel) split into two lower valleys along the direction and four higher valleys along the direction (right panel).