le="margin-bottom: -1em;">
An integer variable that determines which element of the
dynamical polarizability will be computed:
1 -&gt; alpha_xx(omega), 2 -&gt; alpha_yy(omega), and
3 -&gt; alpha_zz(omega). When set to 4, three Lanczos chains
are sequentially performed and the full polarizability
tensor and the absorption coefficient are computed.
         </pre></blockquote></td></tr>
</table>
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