BROWSE

Related Scientist

Researcher

원자제어 저차원 전자계 연구단
원자제어 저차원 전자계 연구단
more info

Enhancement of the anisotropic photocurrent in ferroelectric oxides by strain gradients

Cited 45 time in webofscience Cited 0 time in scopus
185 Viewed 8 Downloaded
Title
Enhancement of the anisotropic photocurrent in ferroelectric oxides by strain gradients
Author(s)
Chu, K.; Jang, B.-K.; Ji Ho Sung; Shin, Y.A.; Lee, E.-S.; Song, K.; Lee, J.H.; Woo, C.-S.; Kim, S.J.; Choi, S.-Y.; Koo, T.Y.; Kim, Y.-H.; Oh, S.-H.; Moon-Ho Jo; Yang, C.-H.
Publication Date
2015-11
Journal
NATURE NANOTECHNOLOGY, v.10, no.11, pp.972 - 979
Publisher
NATURE PUBLISHING GROUP
Abstract
The phase separation of multiple competing structural/ferroelectric phases has attracted particular attention owing to its excellent electromechanical properties. Little is known, however, about the strain-gradient-induced electronic phenomena at the interface of competing structural phases. Here, we investigate the polymorphic phase interface of bismuth ferrites using spatially resolved photocurrent measurements, present the observation of a large enhancement of the anisotropic interfacial photocurrent by two orders of magnitude, and discuss the possible mechanism on the basis of the flexoelectric effect. Nanoscale characterizations of the photosensitive area through position-sensitive angle-resolved piezoresponse force microscopy and electron holography techniques, in conjunction with phase field simulation, reveal that regularly ordered dipole-charged domain walls emerge. These findings offer practical implications for complex oxide optoelectronics. © 2015 Macmillan Publishers Limited. All rights reserved
URI
https://pr.ibs.re.kr/handle/8788114/2258
ISSN
1748-3387
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > Journal Papers (저널논문)
Files in This Item:
naturenanotechnology_ 성지호, 조문호(공동저자).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