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Vector Optical Activity in the Weyl Semimetal TaAs

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 نشر من قبل Michael R. Norman
 تاريخ النشر 2015
  مجال البحث فيزياء
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 تأليف M. R. Norman




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It is shown that the Weyl semimetal TaAs can have a significant polar vector contribution to its optical activity. This is quantified by ab initio calculations of the resonant x-ray diffraction at the Ta L1 edge. For the Bragg vector (400), this polar vector contribution to the circular intensity differential between left and right polarized x-rays is predicted to be comparable to that arising from linear dichroism. Implications this result has in regards to optical effects predicted for topological Weyl semimetals are discussed.



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