Dirac points in chiral liquid crystals

Dirac points in chiral liquid crystals

We report about observation of Dirac points in chiral liquid crystals (CLC), both in the presence of external magnetic field and in its absence. The analytical formulas for frequencies of Dirac points and the analytical dispersion relations for wave vectors were obtained. The peculiarities of magnet...

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Veröffentlicht in:Physics letters. A 2022-08, Vol.443, p.128222, Article 128222
1. Verfasser: Gevorgyan, A.H.
Format: Artikel
Sprache:eng
Schlagworte:
Chiral liquid crystals
Dirac points
Eigen modes
Indirect photonic band gap
Magnetically induced transparency and absorption
Unidirectional transmission
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Zusammenfassung:We report about observation of Dirac points in chiral liquid crystals (CLC), both in the presence of external magnetic field and in its absence. The analytical formulas for frequencies of Dirac points and the analytical dispersion relations for wave vectors were obtained. The peculiarities of magnetically induced transparency/absorption in the case of gain were investigated, too. •Dirac points in chiral liquid crystals.•Magnetically induced transparency in chiral liquid crystals.•Unidirectional transmission.
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2022.128222