Observation of phonon Stark effect

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorHuang, Zhihengen_US
dc.contributor.authorBai, Yunfeien_US
dc.contributor.authorZhao, Yanchongen_US
dc.contributor.authorLiu, Leen_US
dc.contributor.authorZhao, Xuanen_US
dc.contributor.authorWu, Jiangbinen_US
dc.contributor.authorWatanabe, Kenjien_US
dc.contributor.authorTaniguchi, Takashien_US
dc.contributor.authorYang, Weien_US
dc.contributor.authorShi, Dongxiaen_US
dc.contributor.authorXu, Yangen_US
dc.contributor.authorZhang, Tiantianen_US
dc.contributor.authorZhang, Qingmingen_US
dc.contributor.authorTan, Ping Hengen_US
dc.contributor.authorSun, Zhipeien_US
dc.contributor.authorMeng, Shengen_US
dc.contributor.authorWang, Yaxianen_US
dc.contributor.authorDu, Luojunen_US
dc.contributor.authorZhang, Guangyuen_US
dc.contributor.departmentDepartment of Electronics and Nanoengineeringen
dc.contributor.groupauthorCentre of Excellence in Quantum Technology, QTFen
dc.contributor.groupauthorZhipei Sun Groupen
dc.contributor.organizationCAS - Institute of Physicsen_US
dc.contributor.organizationCAS - Institute of Semiconductorsen_US
dc.contributor.organizationNational Institute for Materials Scienceen_US
dc.contributor.organizationInstitute of Theoretical Physics of the Chinese Academy of Sciencesen_US
dc.date.accessioned2024-06-12T06:21:50Z
dc.date.available2024-06-12T06:21:50Z
dc.date.issued2024-12en_US
dc.descriptionPublisher Copyright: © The Author(s) 2024.
dc.description.abstractStark effect, the electric-field analogue of magnetic Zeeman effect, is one of the celebrated phenomena in modern physics and appealing for emergent applications in electronics, optoelectronics, as well as quantum technologies. While in condensed matter it has prospered only for excitons, whether other collective excitations can display Stark effect remains elusive. Here, we report the observation of phonon Stark effect in a two-dimensional quantum system of bilayer 2H-MoS2. The longitudinal acoustic phonon red-shifts linearly with applied electric fields and can be tuned over ~1 THz, evidencing giant Stark effect of phonons. Together with many-body ab initio calculations, we uncover that the observed phonon Stark effect originates fundamentally from the strong coupling between phonons and interlayer excitons (IXs). In addition, IX-mediated electro-phonon intensity modulation up to ~1200% is discovered for infrared-active phonon A2u. Our results unveil the exotic phonon Stark effect and effective phonon engineering by IX-mediated mechanism, promising for a plethora of exciting many-body physics and potential technological innovations.en
dc.description.versionPeer revieweden
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationHuang, Z, Bai, Y, Zhao, Y, Liu, L, Zhao, X, Wu, J, Watanabe, K, Taniguchi, T, Yang, W, Shi, D, Xu, Y, Zhang, T, Zhang, Q, Tan, P H, Sun, Z, Meng, S, Wang, Y, Du, L & Zhang, G 2024, 'Observation of phonon Stark effect', Nature Communications, vol. 15, no. 1, 4586. https://doi.org/10.1038/s41467-024-48992-wen
dc.identifier.doi10.1038/s41467-024-48992-wen_US
dc.identifier.issn2041-1723
dc.identifier.otherPURE UUID: d96df45d-8177-4607-98ee-fe82066b751fen_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/d96df45d-8177-4607-98ee-fe82066b751fen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/148004236/s41467-024-48992-w.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/128698
dc.identifier.urnURN:NBN:fi:aalto-202406124288
dc.language.isoenen
dc.publisherNature Publishing Group
dc.relation.fundinginfoWe thank Teng Yang for helpful discussions. This work is supported by the National Key R&D Program of China (2023YFA1407000, 2021YFA1202900, 2021YFA1400502), the National Science Foundation of China (NSFC) (12274447, 61888102), Guangdong Major Project of Basic and Applied Basic Research (2021B0301030002), and the Strategic Priority Research Program of Chinese Academy of Sciences under the grant No. XDB0470101. Y. W. and S. M. acknowledge funding support from the Ministry of Science and Technology (No. 2021YFA1400201), NSFC (Nos. 12025407, 92250303 and 11934004), and Chinese Academy of Sciences (Nos. YSBR047 and XDB33030100). K.W. and T.T. acknowledge support from the JSPS KAKENHI (20H00354, 21H05233 and 23H02052) and World Premier International Research Center Initiative (WPI), MEXT, Japan.
dc.relation.ispartofseriesNature Communicationsen
dc.relation.ispartofseriesVolume 15, issue 1en
dc.rightsopenAccessen
dc.titleObservation of phonon Stark effecten
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion

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