Enhanced flexoelectricity at reduced dimensions revealed by mechanically tunable quantum tunnelling

Saikat Das; Bo Wang; Tula R. Paudel; Sung Min Park; Evgeny Y. Tsymbal; Long-Qing Chen; Daesu Lee; Tae Won Noh

doi:10.1038/s41467-019-08462-0

Nature Communications (Feb 2019)

Enhanced flexoelectricity at reduced dimensions revealed by mechanically tunable quantum tunnelling

Saikat Das,
Bo Wang,
Tula R. Paudel,
Sung Min Park,
Evgeny Y. Tsymbal,
Long-Qing Chen,
Daesu Lee,
Tae Won Noh

Affiliations

Saikat Das: Center for Correlated Electron Systems, Institute for Basic Science (IBS)
Bo Wang: Department of Materials Science and Engineering, Pennsylvania State University, University Park
Tula R. Paudel: Department of Physics and Astronomy & Nebraska Center for Materials and Nanoscience, University of Nebraska
Sung Min Park: Center for Correlated Electron Systems, Institute for Basic Science (IBS)
Evgeny Y. Tsymbal: Department of Physics and Astronomy & Nebraska Center for Materials and Nanoscience, University of Nebraska
Long-Qing Chen: Department of Materials Science and Engineering, Pennsylvania State University, University Park
Daesu Lee: Department of Physics, Pohang University of Science and Technology (POSTECH)
Tae Won Noh: Center for Correlated Electron Systems, Institute for Basic Science (IBS)

DOI: https://doi.org/10.1038/s41467-019-08462-0
Journal volume & issue: Vol. 10, no. 1
pp. 1 – 7

Abstract

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Flexoelectricity exists in every dielectric material exposed to a strain gradient and is enhanced at the nanoscale. However, precisely determining flexoelectric coupling parameters at the nanoscale is challenging, but has been overcome here by measuring the current across a tunnel junction.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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