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Large, valley-exclusive Bloch-Siegert shift in monolayer WS[subscript 2]

dc.contributor.authorLui, Chun Hung
dc.contributor.authorLee, Yi-Hsien
dc.contributor.authorSie, Edbert Jarvis
dc.contributor.authorKong, Jing
dc.contributor.authorGedik, Nuh
dc.contributor.authorFu, Liang
dc.date.accessioned2017-06-05T16:07:12Z
dc.date.available2017-06-05T16:07:12Z
dc.date.issued2017-03
dc.date.submitted2016-10
dc.identifier.issn0036-8075
dc.identifier.issn1095-9203
dc.identifier.urihttp://hdl.handle.net/1721.1/109589
dc.description.abstractCoherent interaction with off-resonance light can be used to shift the energy levels of atoms, molecules, and solids. The dominant effect is the optical Stark shift, but there is an additional contribution from the so-called Bloch-Siegert shift that has eluded direct and exclusive observation in solids. We observed an exceptionally large Bloch-Siegert shift in monolayer tungsten disulfide (WS[subscript 2]) under infrared optical driving. By controlling the light helicity, we could confine the Bloch-Siegert shift to occur only at one valley, and the optical Stark shift at the other valley, because the two effects obey opposite selection rules at different valleys. Such a large and valley-exclusive Bloch-Siegert shift allows for enhanced control over the valleytronic properties of two-dimensional materials.en_US
dc.description.sponsorshipUnited States. Department of Energyen_US
dc.description.sponsorshipUnited States. Dept. of Energy. Division of Materials Sciences and Engineeringen_US
dc.description.sponsorshipGordon and Betty Moore Foundation (EPiQS Initiative Grant GBMF4540)en_US
dc.description.sponsorshipHarvard University. Center for Integrated Quantum Materials (Grant DMR-1231319)en_US
dc.language.isoen_US
dc.publisherAmerican Association for the Advancement of Science (AAAS)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1126/science.aal2241en_US
dc.rightsArticle 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.sourceMIT Web Domainen_US
dc.titleLarge, valley-exclusive Bloch-Siegert shift in monolayer WS[subscript 2]en_US
dc.title.alternativeLarge, valley-exclusive Bloch-Siegert shift in monolayer WS2en_US
dc.typeArticleen_US
dc.identifier.citationSie, Edward J. et al. "Large, valley-exclusive Bloch-Siegert shift in monolayer WS[subscript 2]." Science, 355:6329 (2017): 1066-1069.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Scienceen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.mitauthorSie, Edbert Jarvis
dc.contributor.mitauthorKong, Jing
dc.contributor.mitauthorGedik, Nuh
dc.contributor.mitauthorFu, Liang
dc.relation.journalScienceen_US
dc.eprint.versionOriginal manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/NonPeerRevieweden_US
dspace.orderedauthorsSie, Edward J.; Lui, Chun Hung; Lee, Yi-Hsien; Fu, Liang; Kong, Jing; Gedik, Nuhen_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0003-3477-6459
dc.identifier.orcidhttps://orcid.org/0000-0003-0551-1208
dc.identifier.orcidhttps://orcid.org/0000-0002-6394-4987
dc.identifier.orcidhttps://orcid.org/0000-0002-8803-1017
mit.licensePUBLISHER_POLICYen_US


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