Phonon chirality tuned through interface transmission in a one-dimensional atomic junction model
There has been growing interest in revealing exotic properties of chiral phonons since they were found in honeycomb AB lattice, and very recently they were experimentally verified in a tungsten diselenide monolayer (2018 Science 359 579). In this work, we manipulate phonon chirality through interfac...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2018-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aacf22 |
| _version_ | 1797750654946508800 |
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| author | Jiaojiao Wang Hao Chen Guohuan Xiong Xifang Xu Lifa Zhang |
| author_facet | Jiaojiao Wang Hao Chen Guohuan Xiong Xifang Xu Lifa Zhang |
| author_sort | Jiaojiao Wang |
| collection | DOAJ |
| description | There has been growing interest in revealing exotic properties of chiral phonons since they were found in honeycomb AB lattice, and very recently they were experimentally verified in a tungsten diselenide monolayer (2018 Science 359 579). In this work, we manipulate phonon chirality through interface transmission via a one-dimensional atomic junction model by using the scattering boundary method. Due to the difference of phase change between two transverse directions induced by the anisotropy at interface coupling, the phonon polarization can be tuned between circular and linear in the high-frequency range. In a double-junction atomic model with an anisotropic center, we find that the phase change accumulates when the phonon transmits through the interface material thus the phonon can be tuned between different chirality in the medium frequency range. The phase change is found to linearly depend on the width of the interface material, while the transmission coefficient vibrates. To obtain the same value of the transmission coefficients along the two transverse directions and thus to keep the outgoing phonon circularly polarized, we can connect two interface materials with opposite anisotropy, where the phase-change difference for chirality tuning can be adjusted by the difference of widths of the two materials. Therefore, by using the atomic junction model, we find that the phonon chirality can be effectively tuned through interfaces, which is helpful for the manipulation and application of chiral phonons. |
| first_indexed | 2024-03-12T16:36:58Z |
| format | Article |
| id | doaj.art-e80ee8cba6c74c4b98ea231fb5720834 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:36:58Z |
| publishDate | 2018-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-e80ee8cba6c74c4b98ea231fb57208342023-08-08T14:51:51ZengIOP PublishingNew Journal of Physics1367-26302018-01-0120707300610.1088/1367-2630/aacf22Phonon chirality tuned through interface transmission in a one-dimensional atomic junction modelJiaojiao Wang0Hao Chen1Guohuan Xiong2Xifang Xu3https://orcid.org/0000-0003-2426-0213Lifa Zhang4https://orcid.org/0000-0001-6108-1404Center for Quantum Transport and Thermal Energy Science, School of Physics and Technology, Nanjing Normal University , Nanjing, 210023, People's Republic of ChinaCenter for Quantum Transport and Thermal Energy Science, School of Physics and Technology, Nanjing Normal University , Nanjing, 210023, People's Republic of ChinaCenter for Quantum Transport and Thermal Energy Science, School of Physics and Technology, Nanjing Normal University , Nanjing, 210023, People's Republic of ChinaCenter for Quantum Transport and Thermal Energy Science, School of Physics and Technology, Nanjing Normal University , Nanjing, 210023, People's Republic of ChinaCenter for Quantum Transport and Thermal Energy Science, School of Physics and Technology, Nanjing Normal University , Nanjing, 210023, People's Republic of ChinaThere has been growing interest in revealing exotic properties of chiral phonons since they were found in honeycomb AB lattice, and very recently they were experimentally verified in a tungsten diselenide monolayer (2018 Science 359 579). In this work, we manipulate phonon chirality through interface transmission via a one-dimensional atomic junction model by using the scattering boundary method. Due to the difference of phase change between two transverse directions induced by the anisotropy at interface coupling, the phonon polarization can be tuned between circular and linear in the high-frequency range. In a double-junction atomic model with an anisotropic center, we find that the phase change accumulates when the phonon transmits through the interface material thus the phonon can be tuned between different chirality in the medium frequency range. The phase change is found to linearly depend on the width of the interface material, while the transmission coefficient vibrates. To obtain the same value of the transmission coefficients along the two transverse directions and thus to keep the outgoing phonon circularly polarized, we can connect two interface materials with opposite anisotropy, where the phase-change difference for chirality tuning can be adjusted by the difference of widths of the two materials. Therefore, by using the atomic junction model, we find that the phonon chirality can be effectively tuned through interfaces, which is helpful for the manipulation and application of chiral phonons.https://doi.org/10.1088/1367-2630/aacf22chiral phononchirality tuninginterface transmissionatomic junction model |
| spellingShingle | Jiaojiao Wang Hao Chen Guohuan Xiong Xifang Xu Lifa Zhang Phonon chirality tuned through interface transmission in a one-dimensional atomic junction model New Journal of Physics chiral phonon chirality tuning interface transmission atomic junction model |
| title | Phonon chirality tuned through interface transmission in a one-dimensional atomic junction model |
| title_full | Phonon chirality tuned through interface transmission in a one-dimensional atomic junction model |
| title_fullStr | Phonon chirality tuned through interface transmission in a one-dimensional atomic junction model |
| title_full_unstemmed | Phonon chirality tuned through interface transmission in a one-dimensional atomic junction model |
| title_short | Phonon chirality tuned through interface transmission in a one-dimensional atomic junction model |
| title_sort | phonon chirality tuned through interface transmission in a one dimensional atomic junction model |
| topic | chiral phonon chirality tuning interface transmission atomic junction model |
| url | https://doi.org/10.1088/1367-2630/aacf22 |
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