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dc.contributor.authorErgeçen, Emre
dc.contributor.authorIlyas, Batyr
dc.contributor.authorMao, Dan
dc.contributor.authorPo, Hoi Chun
dc.contributor.authorYilmaz, Mehmet Burak
dc.contributor.authorKim, Junghyun
dc.contributor.authorPark, Je-Geun
dc.contributor.authorSenthil, T.
dc.contributor.authorGedik, Nuh
dc.date.accessioned2022-04-14T19:19:09Z
dc.date.available2022-04-13T16:34:19Z
dc.date.available2022-04-14T19:19:09Z
dc.date.issued2022-01
dc.date.submitted2021-07
dc.identifier.issn2041-1723
dc.identifier.urihttps://hdl.handle.net/1721.1/141883.2
dc.description.abstract<jats:title>Abstract</jats:title><jats:p>In van der Waals (vdW) materials, strong coupling between different degrees of freedom can hybridize elementary excitations into bound states with mixed character<jats:sup>1–3</jats:sup>. Correctly identifying the nature and composition of these bound states is key to understanding their ground state properties and excitation spectra<jats:sup>4,5</jats:sup>. Here, we use ultrafast spectroscopy to reveal bound states of <jats:italic>d</jats:italic>-orbitals and phonons in 2D vdW antiferromagnet NiPS<jats:sub>3</jats:sub>. These bound states manifest themselves through equally spaced phonon replicas in frequency domain. These states are optically dark above the Néel temperature and become accessible with magnetic order. By launching this phonon and spectrally tracking its amplitude, we establish the electronic origin of bound states as localized <jats:italic>d</jats:italic>–<jats:italic>d</jats:italic> excitations. Our data directly yield electron-phonon coupling strength which exceeds the highest known value in 2D systems<jats:sup>6</jats:sup>. These results demonstrate NiPS<jats:sub>3</jats:sub> as a platform to study strong interactions between spins, orbitals and lattice, and open pathways to coherent control of 2D magnets.</jats:p>en_US
dc.language.isoen
dc.publisherSpringer Science and Business Media LLCen_US
dc.relation.isversionofhttp://dx.doi.org/10.1038/s41467-021-27741-3en_US
dc.rightsCreative Commons Attribution 4.0 International licenseen_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.sourceNatureen_US
dc.titleMagnetically brightened dark electron-phonon bound states in a van der Waals antiferromagneten_US
dc.typeArticleen_US
dc.identifier.citationErgeçen, Emre, Ilyas, Batyr, Mao, Dan, Po, Hoi Chun, Yilmaz, Mehmet Burak et al. 2022. "Magnetically brightened dark electron-phonon bound states in a van der Waals antiferromagnet." Nature Communications, 13 (1).en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physics
dc.relation.journalNature Communicationsen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2022-04-13T16:30:39Z
dspace.orderedauthorsErgeçen, E; Ilyas, B; Mao, D; Po, HC; Yilmaz, MB; Kim, J; Park, J-G; Senthil, T; Gedik, Nen_US
dspace.date.submission2022-04-13T16:30:42Z
mit.journal.volume13en_US
mit.journal.issue1en_US
mit.licensePUBLISHER_CC
mit.metadata.statusAuthority Work Neededen_US


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