Uses matplotlib to plot the evolution of the structural relaxation.

        Args:
            ax_list: List of axes. If None a new figure is produced.

        Returns:
            `matplotlib` figure

def slideshow(self, **kwargs):
        """
        Uses matplotlib to plot the evolution of the structural relaxation.

        Args:
            ax_list: List of axes. If None a new figure is produced.

        Returns:
            `matplotlib` figure
        """
        for i, cycle in enumerate(self.cycles):
            cycle.plot(title="Relaxation step %s" % (i + 1),
                       tight_layout=kwargs.pop("tight_layout", True),
                       show=kwargs.pop("show", True))