Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session B38: Ferroelectric Oxide Heterostructures and Freestanding Membranes
11:30 AM–2:30 PM,
Monday, March 6, 2023
Room: Room 230
Sponsoring
Unit:
DMP
Chair: Seung Sae Hong, University of California, Davis
Abstract: B38.00011 : Twisted complex oxide lateral homostructures*
1:54 PM–2:06 PM
Presenter:
Jan-Chi Yang
(National Cheng Kung University)
Author:
Jan-Chi Yang
(National Cheng Kung University)
In this talk, using multiferroic BiFeO3 as a model system, we propose an efficient approach to fabricate twisted oxide lateral homostructures with various conjunction tunability, including crystalline orientation, epitaxial constrain and phase stability. With a patterned prototype device, we further demonstrate that the proposed approach is not only compatible with conventional lithography and etching processes, but also versatile for fabricating various twisted complex materials. Additionally, we show that the lateral homostructures can also be assembled by combining structurally-different polymorphs, forming interfaces with unconventional physical properties. Our results evidence the excellent controllability and unbounded conjunction tunability of the lateral homostructures using the proposed method, allowing epitaxial films to be assembled at particular position in the plane, as if they were artificially “weaved”. Such an approach not only provides a new way to design twisted lateral homostructures, but also depicts an different scene of epitaxial growth.
*This work is supported by the Ministry of Science and Technology (MOST) in Taiwan. The research is also supported in part by Higher Education Sprout Project, Ministry of Education to the Headquarters of University Advancement at National Cheng Kung University, Taiwan.
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