BROWSE

Related Scientist

cces's photo.

cces
강상관계물질연구단
more info

ITEM VIEW & DOWNLOAD

Symmetry-Controlled Electron-Phonon Interactions in van der Waals Heterostructures

DC Field Value Language
dc.contributor.authorChen Chen-
dc.contributor.authorXiaolong Chen-
dc.contributor.authorHongyi Yu-
dc.contributor.authorYuchuan Shao-
dc.contributor.authorQiushi Guo-
dc.contributor.authorBingchen Deng-
dc.contributor.authorSungmin Lee-
dc.contributor.authorChao Ma-
dc.contributor.authorKenji Watanabe-
dc.contributor.authorTakashi Taniguchi-
dc.contributor.authorJe-Geun Park-
dc.contributor.authorShengxi Huang-
dc.contributor.authorWang Yao-
dc.contributor.authorFengnian Xia-
dc.date.available2019-05-02T08:09:34Z-
dc.date.created2019-02-18-
dc.date.issued2019-01-
dc.identifier.issn1936-0851-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/5740-
dc.description.abstractLight-matter interactions in the van der Waals (vdWs) heterostructures exhibit many fascinating properties which can be harnessed to realize optoelectronic applications and probe fundamental physics. Moreover, the electron-phonon interaction in the vdWs heterostructures can have a profound impact on light-matter interaction properties because light excited electrons can strongly couple with phonons in heterostructures. Here, we report symmetry-controlled electron-phonon interactions in engineered two-dimensional (2D) material/silicon dioxide (SiO2) vdWs heterostructures. We observe two Raman modes arising from originally Raman-silent phonon modes in SiO2. The Raman modes have fixed peak positions regardless of the type of 2D materials in the heterostructures. Interestingly, such Raman emissions exhibit various symmetry properties in heterostructures with 2D materials of different crystalline structures, controlled by their intrinsic electronic band properties. In particular, we reveal chiral Raman emissions with reversed helicity in contrast to that of typical valley polarization in honeycomb 2D materials due to the phonon-assisted excitonic intervalley scattering process induced by electron-hole exchange interaction. The observation of the symmetry-controlled Raman scattering process not only provides a deep insight into the microscopic mechanisms of electron-phonon interactions in vdWs heterostructures but also may lead to the realization of valley-phononic devices. © 2018 American Chemical Society-
dc.description.uri1-
dc.language영어-
dc.publisherAMER CHEMICAL SOC-
dc.subjectanisotropy-
dc.subjectchirality-
dc.subjectelectrona-phonon coupling-
dc.subjectexcitonic intervalley scattering-
dc.subjectRaman mode-
dc.subjectsymmetry-
dc.titleSymmetry-Controlled Electron-Phonon Interactions in van der Waals Heterostructures-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000456749900055-
dc.identifier.scopusid2-s2.0-85060366293-
dc.identifier.rimsid67039-
dc.contributor.affiliatedAuthorSungmin Lee-
dc.contributor.affiliatedAuthorJe-Geun Park-
dc.identifier.doi10.1021/acsnano.8b07290-
dc.identifier.bibliographicCitationACS NANO, v.13, no.1, pp.552 - 559-
dc.citation.titleACS NANO-
dc.citation.volume13-
dc.citation.number1-
dc.citation.startPage552-
dc.citation.endPage559-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.subject.keywordAuthoranisotropy-
dc.subject.keywordAuthorchirality-
dc.subject.keywordAuthorelectrona-phonon coupling-
dc.subject.keywordAuthorexcitonic intervalley scattering-
dc.subject.keywordAuthorRaman mode-
dc.subject.keywordAuthorsymmetry-
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
2019-270_Symmetry-Controlled Electron-Phonon Interactions in van der Waals Heterostructures.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse