This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
qcl:material_database [2017/05/19 14:08] stefan.birner |
qcl:material_database [2017/06/08 18:05] stefan.birner |
||
---|---|---|---|
Line 5: | Line 5: | ||
The default material parameters are taken from I. Vurgaftman, J. R. Meyer, L. R. Ram-Mohan, J. Appl. Phys. 89, 5815 (2001). | The default material parameters are taken from I. Vurgaftman, J. R. Meyer, L. R. Ram-Mohan, J. Appl. Phys. 89, 5815 (2001). | ||
- | Some parameters can be overwritten in the input file, see section on ''<Material_Parameters>'' in the [[qcl:input_file|input file documentation]].// | + | Some parameters can be overwritten in the input file, see section on ''<Material_Parameters>'' in the [[qcl:input_file|input file documentation]]. |
S = 1+2F <!-- parameter that accounts for remote-band effects in 8-band k.p theory --> | S = 1+2F <!-- parameter that accounts for remote-band effects in 8-band k.p theory --> | ||
+ | |||
+ | <DeformationPotential Unit="eV">-7.2</DeformationPotential> corresponds to "a_c" of Vurgaftman (i.e. for the conduction band only) in the isotropic approximation. It is used to calculate the shift of the conduction abnd edge due to strain. | ||
+ | It is also used to calculate scattering by acoustic phonons (which is a very small effect, almost negligible in typical QCLs). |