.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "gallery/plot_mdf.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        Click :ref:`here <sphx_glr_download_gallery_plot_mdf.py>`
        to download the full example code or to run this example in your browser via Binder

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_gallery_plot_mdf.py:


Bethe-Salpeter
==============

This example shows how to plot the macroscopic dielectric function (MDF)
computed in the Bethe-Salpeter code.

.. GENERATED FROM PYTHON SOURCE LINES 9-35



.. rst-class:: sphx-glr-horizontal


    *

      .. image:: /gallery/images/sphx_glr_plot_mdf_001.png
          :alt: Si absorption spectrum: EXC vs RPA (averaged over small q-points)
          :class: sphx-glr-multi-img

    *

      .. image:: /gallery/images/sphx_glr_plot_mdf_002.png
          :alt: Real part for the first q-point: EXC vs RPA
          :class: sphx-glr-multi-img

    *

      .. image:: /gallery/images/sphx_glr_plot_mdf_003.png
          :alt: Si macroscopic dielectric tensor (Reduced coord)
          :class: sphx-glr-multi-img

    *

      .. image:: /gallery/images/sphx_glr_plot_mdf_004.png
          :alt: Si macroscopic dielectric tensor (Cartesian coord)
          :class: sphx-glr-multi-img





.. code-block:: default

    import abipy.data as abidata
    from abipy.abilab import abiopen

    # Open the MDF file produced in the tutorial.
    mdf_file = abiopen(abidata.ref_file("tbs_4o_DS2_MDF.nc"))

    # Plot the imaginary part of the macroscopic
    # dielectric function (EXC, RPA, GWRPA) between 2 and 5 eV.
    xlims = (2, 5)

    mdf_file.plot_mdfs(xlims=xlims,
                       title="Si absorption spectrum: EXC vs RPA (averaged over small q-points)")

    # Plot the real part for the first q-point --> 0
    mdf_file.plot_mdfs(cplx_mode="Re", qpoint=0, xlims=xlims,
                       title="Real part for the first q-point: EXC vs RPA")

    # Plot the 6 different components of the macroscopic dielectric tensor
    tensor_exc = mdf_file.get_tensor("exc")
    tensor_exc.symmetrize(mdf_file.structure)
    tensor_exc.plot(title="Si macroscopic dielectric tensor (Reduced coord)")

    tensor_exc.plot(red_coords=False,
                    title="Si macroscopic dielectric tensor (Cartesian coord)")

    mdf_file.close()


.. rst-class:: sphx-glr-timing

   **Total running time of the script:** ( 0 minutes  7.303 seconds)


.. _sphx_glr_download_gallery_plot_mdf.py:


.. only :: html

 .. container:: sphx-glr-footer
    :class: sphx-glr-footer-example


  .. container:: binder-badge

    .. image:: images/binder_badge_logo.svg
      :target: https://mybinder.org/v2/gh/abinit/abipy/gh-pages?filepath=notebooks/gallery/plot_mdf.ipynb
      :alt: Launch binder
      :width: 150 px


  .. container:: sphx-glr-download sphx-glr-download-python

     :download:`Download Python source code: plot_mdf.py <plot_mdf.py>`



  .. container:: sphx-glr-download sphx-glr-download-jupyter

     :download:`Download Jupyter notebook: plot_mdf.ipynb <plot_mdf.ipynb>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_