exciton.eigenvector¶
(
- data_context,
- **kwargs
)
BSE can compute excitonic properties of materials.
The Bethe-Salpeter Equation (BSE) accounts for electron-hole interactions involved in excitonic processes. For systems, where excitonic excitations matter the BSE method is an important tool. One can visualize excitonic contributions as so-called “fatbands” plots. Here, the width of the band is adjusted such that the band is wider the larger the contribution is. This approach helps understanding of the electronic transitions and excitonic behavior in materials.
path
read
selections
dict
Returns possible alternatives for this particular quantity VASP can produce.
The returned dictionary contains a single item with the name of the quantity mapping to all possible selections. Each of these selection may be passed to other functions of this quantity to select which output of VASP is used. Some quantities provide additional elements which can be passed as selection for other routines.
Returns
dict- The key indicates this quantity and the values possible choices for arguments to other functions of this quantity.
to_dict
dict
Read the data into a dictionary.
Returns
dict- The dictionary contains the relevant k-point distances and labels as well as the electronic band eigenvalues. To produce fatband plots, use the array bse_index to access the relevant quantities of the BSE eigenvectors. Note that the dimensions of the bse_index array are k points, conduction bands, valence bands and that the conduction and valence band indices may be offset by first_valence_band and first_conduction_band, respectively.