L{ }

Calling sequence

classical{ L{ } }

Properties

• usage: \(\mathrm{\textcolor{Dandelion}{conditional}}\)

• items: \(\mathrm{maximum\;1}\)

Dependencies

• The L{ } is not allowed if global{ crystal_wz{ } } is present in the input file.

• If global{ crystal_zb{ } } is present in the input file, then at least one of the following: Gamma{ }, X{ }, Delta{ }, and L{ } must be defined.

Functionality

By calling this group, four conduction bands with minimums at \(L\) points become available in the model. The bands are referred to as L_1, L_2, L_3, and L_4 for the \(L\) valleys located at [1 1 1], [1 -1 1], [1 -1 -1], and [1 1 -1] directions, respectively, in output files.

Note

This group does not apply to materials with wurtzite symmetry.

Example

classical{
    L{}
    HH{}
}

global{
   ...
   crystal_zb{...}
}

Nested keywords

---

Maintained Keywords

The keywords below are available in at least one of currently published releases and are planned to be included also in the next release.

---

output_bandedge{ }

Calling sequence

classical{ L{ output_bandedge{ } } }

Properties

• usage: \(\mathrm{\textcolor{ForestGreen}{optional\;within\;the\;group}}\)

• items: \(\mathrm{maximum\;1}\)

Functionality

Output minimum (band edge) of this band as energy profile in a single file [eV].

Example

classical{
    L{
        output_bandedge{}
    }
    HH{}
}

global{
   ...
   crystal_zb{...}
}

---

output_bandedge{ averaged }

Calling sequence

classical{ L{ output_bandedge{ averaged } } }

Properties

• usage: \(\mathrm{\textcolor{ForestGreen}{optional\;within\;the\;group}}\)

• type: \(\mathrm{choice}\)

• choices: yes; no

• default: no

Functionality

If set to yes then, for each grid point, the energy profile will be averaged between neighboring material grid points. If set to no then abrupt discontinuities at interfaces are visible in the output files (in 1D two points, in 2D four points, in 3D eight points for each grid point).

Example

classical{
    L{
        output_bandedge{
            averaged = yes
        }
    }
    HH{}
}

global{
   ...
   crystal_zb{...}
}