Realization of a magneto-optical near-zero index medium by an unpaired Dirac point
We realize an unpaired Dirac cone at the center of the Brillouin zone, using a gyromagnetic photonic crystal with broken square sublattice symmetry and broken time-reversal symmetry. The behavior of the Dirac modes can be described by a gyromagnetic effective medium model with near-zero refractive i...
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sg-ntu-dr.10356-901782023-02-28T19:26:13Z Realization of a magneto-optical near-zero index medium by an unpaired Dirac point Zhou, Xin Leykam, Daniel Chattopadhyay, Udvas Khanikaev, A. B. Chong, Yi Dong School of Physical and Mathematical Sciences Centre for Disruptive Photonic Technologies (CDPT) Magneto-optical Dirac Point DRNTU::Science::Physics We realize an unpaired Dirac cone at the center of the Brillouin zone, using a gyromagnetic photonic crystal with broken square sublattice symmetry and broken time-reversal symmetry. The behavior of the Dirac modes can be described by a gyromagnetic effective medium model with near-zero refractive index, and Voigt parameter near unity. When two domains are subjected to opposite magnetic biases, there exist unidirectional edge states along the domain wall. This establishes a link between topological edge states and the surface waves of homogeneous magneto-optical media. MOE (Min. of Education, S’pore) Published version 2018-12-26T04:27:27Z 2019-12-06T17:42:28Z 2018-12-26T04:27:27Z 2019-12-06T17:42:28Z 2018 Journal Article Zhou, X., Leykam, D., Chattopadhyay, U., Khanikaev, A. B., & Chong, Y. D. (2018). Realization of a magneto-optical near-zero index medium by an unpaired Dirac point. Physical Review B, 98(20), 205115-. doi: 10.1103/PhysRevB.98.205115 2469-9950 https://hdl.handle.net/10356/90178 http://hdl.handle.net/10220/47197 10.1103/PhysRevB.98.205115 en Physical Review B © 2018 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: [http://dx.doi.org/10.1103/PhysRevB.98.205115]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 7 p. application/pdf |
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Magneto-optical Dirac Point DRNTU::Science::Physics Zhou, Xin Leykam, Daniel Chattopadhyay, Udvas Khanikaev, A. B. Chong, Yi Dong Realization of a magneto-optical near-zero index medium by an unpaired Dirac point |
| description |
We realize an unpaired Dirac cone at the center of the Brillouin zone, using a gyromagnetic photonic crystal with broken square sublattice symmetry and broken time-reversal symmetry. The behavior of the Dirac modes can be described by a gyromagnetic effective medium model with near-zero refractive index, and Voigt parameter near unity. When two domains are subjected to opposite magnetic biases, there exist unidirectional edge states along the domain wall. This establishes a link between topological edge states and the surface waves of homogeneous magneto-optical media. |
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School of Physical and Mathematical Sciences |
| author_facet |
School of Physical and Mathematical Sciences Zhou, Xin Leykam, Daniel Chattopadhyay, Udvas Khanikaev, A. B. Chong, Yi Dong |
| format |
Article |
| author |
Zhou, Xin Leykam, Daniel Chattopadhyay, Udvas Khanikaev, A. B. Chong, Yi Dong |
| author_sort |
Zhou, Xin |
| title |
Realization of a magneto-optical near-zero index medium by an unpaired Dirac point |
| title_short |
Realization of a magneto-optical near-zero index medium by an unpaired Dirac point |
| title_full |
Realization of a magneto-optical near-zero index medium by an unpaired Dirac point |
| title_fullStr |
Realization of a magneto-optical near-zero index medium by an unpaired Dirac point |
| title_full_unstemmed |
Realization of a magneto-optical near-zero index medium by an unpaired Dirac point |
| title_sort |
realization of a magneto-optical near-zero index medium by an unpaired dirac point |
| publishDate |
2018 |
| url |
https://hdl.handle.net/10356/90178 http://hdl.handle.net/10220/47197 |
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