Synthetic-gauge-field-induced Dirac semimetal state in an acoustic resonator system
Recently, a proposal of synthetic gauge field in reduced two-dimensional (2D) system from three-dimensional (3D) acoustic structure shows an analogue of the gapped Haldane model with fixed k z , and achieves the gapless Weyl semimetal phase in 3D momentum space. Here, extending this approach of synt...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2017
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| Online Access: | https://hdl.handle.net/10356/84076 http://hdl.handle.net/10220/42919 |
| _version_ | 1826125943429660672 |
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| author | Yang, Zhaoju Gao, Fei Shi, Xihang Zhang, Baile |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Yang, Zhaoju Gao, Fei Shi, Xihang Zhang, Baile |
| author_sort | Yang, Zhaoju |
| collection | NTU |
| description | Recently, a proposal of synthetic gauge field in reduced two-dimensional (2D) system from three-dimensional (3D) acoustic structure shows an analogue of the gapped Haldane model with fixed k z , and achieves the gapless Weyl semimetal phase in 3D momentum space. Here, extending this approach of synthetic gauge flux, we propose a reduced square lattice of acoustic resonators, which exhibits Dirac nodes with broken effective time-reversal symmetry. Protected by an additional hidden symmetry, these Dirac nodes with quantized values of topological charge are characterized by nonzero winding number and the finite structure exhibits flat edge modes that cannot be destroyed by perturbations. |
| first_indexed | 2024-10-01T06:44:39Z |
| format | Journal Article |
| id | ntu-10356/84076 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:44:39Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/840762023-02-28T19:41:19Z Synthetic-gauge-field-induced Dirac semimetal state in an acoustic resonator system Yang, Zhaoju Gao, Fei Shi, Xihang Zhang, Baile School of Physical and Mathematical Sciences Centre for Disruptive Photonic Technologies (CDPT) Dirac node Synthetic gauge field Recently, a proposal of synthetic gauge field in reduced two-dimensional (2D) system from three-dimensional (3D) acoustic structure shows an analogue of the gapped Haldane model with fixed k z , and achieves the gapless Weyl semimetal phase in 3D momentum space. Here, extending this approach of synthetic gauge flux, we propose a reduced square lattice of acoustic resonators, which exhibits Dirac nodes with broken effective time-reversal symmetry. Protected by an additional hidden symmetry, these Dirac nodes with quantized values of topological charge are characterized by nonzero winding number and the finite structure exhibits flat edge modes that cannot be destroyed by perturbations. MOE (Min. of Education, S’pore) Published version 2017-07-18T09:24:56Z 2019-12-06T15:37:48Z 2017-07-18T09:24:56Z 2019-12-06T15:37:48Z 2016 Journal Article Yang, Z., Gao, F., Shi, X., & Zhang, B. (2016). Synthetic-gauge-field-induced Dirac semimetal state in an acoustic resonator system. New Journal of Physics, 18, 125003-. 1367-2630 https://hdl.handle.net/10356/84076 http://hdl.handle.net/10220/42919 10.1088/1367-2630/aa4fa9 en New Journal of Physics © 2016 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. 7 p. application/pdf |
| spellingShingle | Dirac node Synthetic gauge field Yang, Zhaoju Gao, Fei Shi, Xihang Zhang, Baile Synthetic-gauge-field-induced Dirac semimetal state in an acoustic resonator system |
| title | Synthetic-gauge-field-induced Dirac semimetal state in an acoustic resonator system |
| title_full | Synthetic-gauge-field-induced Dirac semimetal state in an acoustic resonator system |
| title_fullStr | Synthetic-gauge-field-induced Dirac semimetal state in an acoustic resonator system |
| title_full_unstemmed | Synthetic-gauge-field-induced Dirac semimetal state in an acoustic resonator system |
| title_short | Synthetic-gauge-field-induced Dirac semimetal state in an acoustic resonator system |
| title_sort | synthetic gauge field induced dirac semimetal state in an acoustic resonator system |
| topic | Dirac node Synthetic gauge field |
| url | https://hdl.handle.net/10356/84076 http://hdl.handle.net/10220/42919 |
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