dc.contributor.author | Ye, Zhipeng | |
dc.contributor.author | Ji, Chao | |
dc.contributor.author | Chiu, Kuan-Chang | |
dc.contributor.author | Chou, Cheng-Tse | |
dc.contributor.author | Means-Shively, Casie | |
dc.contributor.author | Anderson, Heidi | |
dc.contributor.author | Wu, Jenn-Ming | |
dc.contributor.author | Kidd, Tim | |
dc.contributor.author | Lee, Yi-Hsien | |
dc.contributor.author | He, Rui | |
dc.contributor.author | Lui, Chun Hung | |
dc.contributor.author | Andersen, Trond | |
dc.date.accessioned | 2015-04-17T14:47:51Z | |
dc.date.available | 2015-04-17T14:47:51Z | |
dc.date.issued | 2015-04 | |
dc.date.submitted | 2015-03 | |
dc.identifier.issn | 1098-0121 | |
dc.identifier.issn | 1550-235X | |
dc.identifier.uri | http://hdl.handle.net/1721.1/96669 | |
dc.description.abstract | We have investigated the vibrational properties of van der Waals heterostructures of monolayer transition metal dichalcogenides (TMDs), specifically MoS[subscript 2]/WSe[subscript 2] and MoSe[subscript 2]/MoS[subscript 2] heterobilayers and twisted MoS[subscript 2] bilayers, by means of ultralow-frequency Raman spectroscopy. We discovered Raman features (at 30–40cm[superscript −1]) that arise from the layer-breathing mode (LBM) vibration between the two incommensurate TMD monolayers in these structures. The LBM Raman intensity correlates strongly with the suppression of photoluminescence that arises from interlayer charge transfer. The LBM is generated only in bilayer areas with direct layer-layer contact and an atomically clean interface. Its frequency also evolves systematically with the relative orientation between the two layers. Our research demonstrates that the LBM can serve as a sensitive probe to the interface environment and interlayer interactions in van der Waals materials. | en_US |
dc.description.sponsorship | American Chemical Society (Petroleum Research Fund Grant 53401-UNI10) | en_US |
dc.description.sponsorship | National Science Foundation (U.S.) (Grant DMR-1206530) | en_US |
dc.description.sponsorship | National Science Foundation (U.S.) (Grant DMR-1410496) | en_US |
dc.publisher | American Physical Society | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1103/PhysRevB.91.165403 | en_US |
dc.rights | Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. | en_US |
dc.source | American Physical Society | en_US |
dc.title | Observation of interlayer phonon modes in van der Waals heterostructures | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Lui, C. H., et al. "Observation of interlayer phonon modes in van der Waals heterostructures." Phys. Rev. B 91, 165403 (April 2015). © 2015 American Physical Society | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Physics | en_US |
dc.contributor.mitauthor | Lui, Chun Hung | en_US |
dc.contributor.mitauthor | Andersen, Trond | en_US |
dc.relation.journal | Physical Review B | en_US |
dc.eprint.version | Final published version | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
dc.date.updated | 2015-04-08T22:00:18Z | |
dc.language.rfc3066 | en | |
dc.rights.holder | American Physical Society | |
dspace.orderedauthors | Lui, C. H.; Ye, Zhipeng; Ji, Chao; Chiu, Kuan-Chang; Chou, Cheng-Tse; Andersen, Trond I.; Means-Shively, Casie; Anderson, Heidi; Wu, Jenn-Ming; Kidd, Tim; Lee, Yi-Hsien; He, Rui | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-7406-5283 | |
mit.license | PUBLISHER_POLICY | en_US |
mit.metadata.status | Complete | |