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:

{\displaystyle \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.

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