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July 23, 2026Nano LettersOpen Access

Pulse-Duration-Sensitive High Harmonics and Attosecond Locally Chiral Near Fields from a Chiral Topological Weyl Semimetal

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Authors

AHAlba de las HerasZNZhengwei NieSPSubhojit Pal

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Overview

Theoretical analysis reveals that pulse duration significantly enhances high harmonic generation in chiral Weyl semimetals, indicating new experimental avenues.

Key Points

  • To investigate how pulse duration affects high harmonic generation in chiral Weyl semimetals, particularly RhSi.
  • Theoretical analysis of high harmonic generation (HHG) in various materials including Si, MgO, and RhSi.
  • Examination of HHG selection rules in RhSi for generating attosecond locally chiral near fields.
  • Higher photon energies in HHG are achieved with longer pulse durations due to enhanced conduction band excitations.
  • The chiral structure of RhSi facilitates the generation of a 3D electric field with asymmetric torsion on attosecond time scales.

Cite This Study

Heras et al. (2026) studied this question.

synapsesocial.com/papers/6a61ae6bfaa9903c51169c3dhttps://doi.org/10.1021/acs.nanolett.6c00913
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