residual_strain

Calling sequence

strain{ residual_strain }

Properties

• usage: $\mathrm{conditional}$

• type: real number

• values: $-1.0\le r\le 1.0$

• unit: $-$

Dependencies

• This group is not allowed if any of no_strain{ } and import_strain{ } is defined.

Functionality

Residuals strain in the substrate $\eta$ scales lattice parameter of the substrate (only for the purpose of strain computation) according to the formula $a_{\eta ,s}=(1+\eta )\cdot a_{0,s}$, where $a_{0,s}$ is the (unstrained) lattice parameter of the substrate and $a_{\eta ,s}$ the modified (strained) lattice parameter of the substrate. The latter one represents the substrate during evaluation of the strain tensor.

Example

strain{
    residual_strain = 0.2
    pseudomorphic_strain{}
}