BROWSE

Related Scientist

cces's photo.

cces
강상관계물질연구단
more info

ITEM VIEW & DOWNLOAD

Enhanced flexoelectricity at reduced dimensions revealed by mechanically tunable quantum tunnelling

DC Field Value Language
dc.contributor.authorSaikat Das-
dc.contributor.authorWang B.-
dc.contributor.authorPaudel T.R.-
dc.contributor.authorSung Min Park-
dc.contributor.authorTsymbal E.Y.-
dc.contributor.authorChen L.-Q.-
dc.contributor.authorDaesu Lee-
dc.contributor.authorTae Won Noh-
dc.date.available2019-05-02T08:08:56Z-
dc.date.created2019-02-18-
dc.date.issued2019-02-
dc.identifier.issn2041-1723-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/5711-
dc.description.abstractFlexoelectricity is a universal electromechanical coupling effect whereby all dielectric materials polarise in response to strain gradients. In particular, nanoscale flexoelectricity promises exotic phenomena and functions, but reliable characterisation methods are required to unlock its potential. Here, we report anomalous mechanical control of quantum tunnelling that allows for characterising nanoscale flexoelectricity. By applying strain gradients with an atomic force microscope tip, we systematically polarise an ultrathin film of otherwise nonpolar SrTiO3, and simultaneously measure tunnel current across it. The measured tunnel current exhibits critical behaviour as a function of strain gradients, which manifests large modification of tunnel barrier profiles via flexoelectricity. Further analysis of this critical behaviour reveals significantly enhanced flexocoupling strength in ultrathin SrTiO3, compared to that in bulk, rendering flexoelectricity more potent at the nanoscale. Our study not only suggests possible applications exploiting dynamic mechanical control of quantum effect, but also paves the way to characterise nanoscale flexoelectricity. © 2019, The Author(s)-
dc.description.uri1-
dc.language영어-
dc.publisherNATURE PUBLISHING GROUP-
dc.titleEnhanced flexoelectricity at reduced dimensions revealed by mechanically tunable quantum tunnelling-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000457440700002-
dc.identifier.scopusid2-s2.0-85060920244-
dc.identifier.rimsid66993-
dc.contributor.affiliatedAuthorSaikat Das-
dc.contributor.affiliatedAuthorSung Min Park-
dc.contributor.affiliatedAuthorTae Won Noh-
dc.identifier.doi10.1038/s41467-019-08462-0-
dc.identifier.bibliographicCitationNATURE COMMUNICATIONS, v.10, pp.537-
dc.citation.titleNATURE COMMUNICATIONS-
dc.citation.volume10-
dc.citation.startPage537-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
s41467-019-08462-0.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