Colossal flexoresistance in dielectrics

Sung Min Park; Bo Wang; Tula Paudel; Se Young Park; Saikat Das; Jeong Rae Kim; Eun Kyo Ko; Han Gyeol Lee; Nahee Park; Lingling Tao; Dongseok Suh; Evgeny Y. Tsymbal; Long-Qing Chen; Tae Won Noh; Daesu Lee

doi:10.1038/s41467-020-16207-7

Nature Communications (May 2020)

Colossal flexoresistance in dielectrics

Sung Min Park,
Bo Wang,
Tula Paudel,
Se Young Park,
Saikat Das,
Jeong Rae Kim,
Eun Kyo Ko,
Han Gyeol Lee,
Nahee Park,
Lingling Tao,
Dongseok Suh,
Evgeny Y. Tsymbal,
Long-Qing Chen,
Tae Won Noh,
Daesu Lee

Affiliations

Sung Min Park: Center for Correlated Electron Systems, Institute for Basic Science (IBS)
Bo Wang: Department of Materials Science and Engineering, The Pennsylvania State University
Tula Paudel: Department of Physics and Astronomy & Nebraska Center for Materials and Nanoscience, University of Nebraska
Se Young Park: Center for Correlated Electron Systems, Institute for Basic Science (IBS)
Saikat Das: Center for Correlated Electron Systems, Institute for Basic Science (IBS)
Jeong Rae Kim: Center for Correlated Electron Systems, Institute for Basic Science (IBS)
Eun Kyo Ko: Center for Correlated Electron Systems, Institute for Basic Science (IBS)
Han Gyeol Lee: Center for Correlated Electron Systems, Institute for Basic Science (IBS)
Nahee Park: Department of Energy Science, Sungkyunkwan University
Lingling Tao: Department of Physics and Astronomy & Nebraska Center for Materials and Nanoscience, University of Nebraska
Dongseok Suh: Department of Energy Science, Sungkyunkwan University
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, The Pennsylvania State University
Tae Won Noh: Center for Correlated Electron Systems, Institute for Basic Science (IBS)
Daesu Lee: Department of Physics, Pohang University of Science and Technology (POSTECH)

DOI: https://doi.org/10.1038/s41467-020-16207-7
Journal volume & issue: Vol. 11, no. 1
pp. 1 – 8

Abstract

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Manipulating the electric state of large band gap dielectrics without any damage is quite challenging. Here, the authors demonstrate by mechanically introducing strain gradients that large electric fields are generated via flexoelectric interactions, resulting in a reversible Zener breakdown in SrTiO3, changing the resistivity by 108.

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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