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dc.contributor.authorZhao, Lu
dc.contributor.authorWang, Jianfeng
dc.contributor.authorLiu, Junwei
dc.contributor.authorXu, Yong
dc.contributor.authorGu, Bing-Lin
dc.contributor.authorXue, Qi-Kun
dc.contributor.authorDuan, Wenhui
dc.date.accessioned2015-07-22T12:31:31Z
dc.date.available2015-07-22T12:31:31Z
dc.date.issued2015-07
dc.date.submitted2015-03
dc.identifier.issn1098-0121
dc.identifier.issn1550-235X
dc.identifier.urihttp://hdl.handle.net/1721.1/97879
dc.description.abstractControl over the helicity degree of freedom of Dirac fermions is identified in thin films of topological materials which act as a tunable “chiral-metamaterial-like” platform to tame left- and right-handed Dirac fermions in two dimensions. Using topological crystalline insulator SnTe(111) thin films as an example, we perform the first-principles calculations and show that giant helicity splitting in the band structures can be induced under moderate electric field. Based on this result, helicity-resolved functionalities, including pronounced electron dichroism, helicity switching, helical negative refraction, and birefraction, are demonstrated, where the intrahelical scattering always dominates over the interhelical one. Such intriguing control strategy for helical Dirac fermions may hold great promise for the applications of helicity-based electron optics and nanoelectronics.en_US
dc.description.sponsorshipNational Natural Science Foundation (China) (Grant 11204154)en_US
dc.description.sponsorshipNational Natural Science Foundation (China) (Grant 11334006)en_US
dc.description.sponsorshipMinistry of Science and Technology of the People's Republic of China (Grant 2011CB921901)en_US
dc.description.sponsorshipMinistry of Science and Technology of the People's Republic of China (Grant 2011CB606405)en_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevB.92.041408en_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.sourceAmerican Physical Societyen_US
dc.titleElectronic analog of chiral metamaterial: Helicity-resolved filtering and focusing of Dirac fermions in thin films of topological materialsen_US
dc.typeArticleen_US
dc.identifier.citationZhao, Lu, Jianfeng Wang, Junwei Liu, Yong Xu, Bing-Lin Gu, Qi-Kun Xue, and Wenhui Duan. "Electronic analog of chiral metamaterial: Helicity-resolved filtering and focusing of Dirac fermions in thin films of topological materials." Phys. Rev. B 92, 041408 (July 2015). © 2015 American Physical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.mitauthorLiu, Junweien_US
dc.relation.journalPhysical Review Ben_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.updated2015-07-21T22:00:12Z
dc.language.rfc3066en
dc.rights.holderAmerican Physical Society
dspace.orderedauthorsZhao, Lu; Wang, Jianfeng; Liu, Junwei; Xu, Yong; Gu, Bing-Lin; Xue, Qi-Kun; Duan, Wenhuien_US
dc.identifier.orcidhttps://orcid.org/0000-0001-8051-7349
mit.licensePUBLISHER_POLICYen_US


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