Truly chiral phonons in α-HgS
Chirality is a manifestation of the asymmetry inherent in nature. It has been defined as the symmetry breaking of the parity of static objects, and the definition was extended to dynamic motion such that true and false chiralities were distinguished. Recently, rotating, yet not propagating, atomic m...
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| Veröffentlicht in: | Nature physics 2023-01, Vol.19 (1), p.35-39 |
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| creator | Ishito, Kyosuke Mao, Huiling Kousaka, Yusuke Togawa, Yoshihiko Iwasaki, Satoshi Zhang, Tiantian Murakami, Shuichi Kishine, Jun-ichiro Satoh, Takuya |
| description | Chirality is a manifestation of the asymmetry inherent in nature. It has been defined as the symmetry breaking of the parity of static objects, and the definition was extended to dynamic motion such that true and false chiralities were distinguished. Recently, rotating, yet not propagating, atomic motions were predicted and observed in two-dimensional materials, and they were referred to as ‘chiral phonons’. A natural development would be the discovery of truly chiral phonons that propagate while rotating in three-dimensional materials. Here we used circularly polarized Raman scattering and first-principles calculations to identify truly chiral phonons in chiral bulk crystals. This approach enabled us to determine the chirality of a crystal in a non-contact and non-destructive manner. In addition, we demonstrated that the law of the conservation of pseudo-angular momentum holds between circularly polarized photons and chiral phonons. These findings are expected to help develop ways for transferring the pseudo-angular momentum from photons to electron spins via propagating chiral phonons in opto-phononic-spintronic devices.
The notion of chirality in dynamical systems with broken spatial symmetry but preserved time inversion symmetry has led to the concept of truly chiral phonons. These have now been observed in bulk HgS using circularly polarized Raman spectroscopy. |
| doi_str_mv | 10.1038/s41567-022-01790-x |
| format | Article |
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The notion of chirality in dynamical systems with broken spatial symmetry but preserved time inversion symmetry has led to the concept of truly chiral phonons. These have now been observed in bulk HgS using circularly polarized Raman spectroscopy.</description><identifier>ISSN: 1745-2473</identifier><identifier>EISSN: 1745-2481</identifier><identifier>DOI: 10.1038/s41567-022-01790-x</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>639/301/119/1002 ; 639/766/119/2792 ; Angular momentum ; Asymmetry ; Atomic ; Broken symmetry ; Chirality ; Circular polarization ; Classical and Continuum Physics ; Complex Systems ; Condensed Matter Physics ; Crystals ; Electron spin ; Electrons ; First principles ; Letter ; Mathematical and Computational Physics ; Molecular ; Optical and Plasma Physics ; Phonons ; Photons ; Physics ; Physics and Astronomy ; Raman spectra ; Raman spectroscopy ; Rotation ; Static objects ; Symmetry ; Theoretical ; Two dimensional materials</subject><ispartof>Nature physics, 2023-01, Vol.19 (1), p.35-39</ispartof><rights>The Author(s), under exclusive licence to Springer Nature Limited 2022. corrected publication 2022</rights><rights>The Author(s), under exclusive licence to Springer Nature Limited 2022. corrected publication 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c473t-e8ceb93346a0fad3a73eec06643c533b0267db4da2bfadcc6994b04850ec4d093</citedby><cites>FETCH-LOGICAL-c473t-e8ceb93346a0fad3a73eec06643c533b0267db4da2bfadcc6994b04850ec4d093</cites><orcidid>0000-0002-8673-0260 ; 0000-0003-1940-5297 ; 0000-0002-2033-9402 ; 0000-0002-2010-6721 ; 0000-0001-6162-7067 ; 0000-0001-6270-0617 ; 0000-0003-4347-7565 ; 0000-0002-8188-0390</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1038/s41567-022-01790-x$$EPDF$$P50$$Gspringer$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1038/s41567-022-01790-x$$EHTML$$P50$$Gspringer$$Hfree_for_read</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Ishito, Kyosuke</creatorcontrib><creatorcontrib>Mao, Huiling</creatorcontrib><creatorcontrib>Kousaka, Yusuke</creatorcontrib><creatorcontrib>Togawa, Yoshihiko</creatorcontrib><creatorcontrib>Iwasaki, Satoshi</creatorcontrib><creatorcontrib>Zhang, Tiantian</creatorcontrib><creatorcontrib>Murakami, Shuichi</creatorcontrib><creatorcontrib>Kishine, Jun-ichiro</creatorcontrib><creatorcontrib>Satoh, Takuya</creatorcontrib><title>Truly chiral phonons in α-HgS</title><title>Nature physics</title><addtitle>Nat. Phys</addtitle><description>Chirality is a manifestation of the asymmetry inherent in nature. It has been defined as the symmetry breaking of the parity of static objects, and the definition was extended to dynamic motion such that true and false chiralities were distinguished. Recently, rotating, yet not propagating, atomic motions were predicted and observed in two-dimensional materials, and they were referred to as ‘chiral phonons’. A natural development would be the discovery of truly chiral phonons that propagate while rotating in three-dimensional materials. Here we used circularly polarized Raman scattering and first-principles calculations to identify truly chiral phonons in chiral bulk crystals. This approach enabled us to determine the chirality of a crystal in a non-contact and non-destructive manner. In addition, we demonstrated that the law of the conservation of pseudo-angular momentum holds between circularly polarized photons and chiral phonons. These findings are expected to help develop ways for transferring the pseudo-angular momentum from photons to electron spins via propagating chiral phonons in opto-phononic-spintronic devices.
The notion of chirality in dynamical systems with broken spatial symmetry but preserved time inversion symmetry has led to the concept of truly chiral phonons. 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Phys</stitle><date>2023-01-01</date><risdate>2023</risdate><volume>19</volume><issue>1</issue><spage>35</spage><epage>39</epage><pages>35-39</pages><issn>1745-2473</issn><eissn>1745-2481</eissn><abstract>Chirality is a manifestation of the asymmetry inherent in nature. It has been defined as the symmetry breaking of the parity of static objects, and the definition was extended to dynamic motion such that true and false chiralities were distinguished. Recently, rotating, yet not propagating, atomic motions were predicted and observed in two-dimensional materials, and they were referred to as ‘chiral phonons’. A natural development would be the discovery of truly chiral phonons that propagate while rotating in three-dimensional materials. Here we used circularly polarized Raman scattering and first-principles calculations to identify truly chiral phonons in chiral bulk crystals. This approach enabled us to determine the chirality of a crystal in a non-contact and non-destructive manner. In addition, we demonstrated that the law of the conservation of pseudo-angular momentum holds between circularly polarized photons and chiral phonons. These findings are expected to help develop ways for transferring the pseudo-angular momentum from photons to electron spins via propagating chiral phonons in opto-phononic-spintronic devices.
The notion of chirality in dynamical systems with broken spatial symmetry but preserved time inversion symmetry has led to the concept of truly chiral phonons. These have now been observed in bulk HgS using circularly polarized Raman spectroscopy.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><doi>10.1038/s41567-022-01790-x</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0002-8673-0260</orcidid><orcidid>https://orcid.org/0000-0003-1940-5297</orcidid><orcidid>https://orcid.org/0000-0002-2033-9402</orcidid><orcidid>https://orcid.org/0000-0002-2010-6721</orcidid><orcidid>https://orcid.org/0000-0001-6162-7067</orcidid><orcidid>https://orcid.org/0000-0001-6270-0617</orcidid><orcidid>https://orcid.org/0000-0003-4347-7565</orcidid><orcidid>https://orcid.org/0000-0002-8188-0390</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | 639/301/119/1002 639/766/119/2792 Angular momentum Asymmetry Atomic Broken symmetry Chirality Circular polarization Classical and Continuum Physics Complex Systems Condensed Matter Physics Crystals Electron spin Electrons First principles Letter Mathematical and Computational Physics Molecular Optical and Plasma Physics Phonons Photons Physics Physics and Astronomy Raman spectra Raman spectroscopy Rotation Static objects Symmetry Theoretical Two dimensional materials |
| title | Truly chiral phonons in α-HgS |
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