FBIAS_A

FBIAS_A = [real (array)]

Description: Defines the step height for the bias potential in $eV$ .

FBIAS_A defines the height of the step ( $A_{\mu }$ ) in the Fermi-like step-shaped bias potential of the following form:

{\tilde {V}}(\xi _{1},\dots ,\xi _{M_{4}})=\sum _{\mu =1}^{M_{4}}{\frac {A_{\mu }}{1+{\text{exp}}\left[-D_{\mu }({\frac {\xi (q)}{\xi _{0\mu }}}-1)\right]}},\;

where the sum runs over all ( $M_{4}$ ) coordinates the potential acts upon, which are defined in the ICONST file by setting the status to 4. The units of $A_{\mu }$ are $eV$ . The number of items defined via FBIAS_A must be equal to $M_{4}$ , otherwise the calculation terminates with an error message.

Related tags and articles