A termination-insensitive and robust electron gas at the heterointerface of two complex oxides
Meng Zhang,
Kai Du,
Tianshuang Ren,
He Tian (),
Ze Zhang,
Harold Y. Hwang and
Yanwu Xie ()
Additional contact information
Meng Zhang: Zhejiang University
Kai Du: Zhejiang University
Tianshuang Ren: Zhejiang University
He Tian: Zhejiang University
Ze Zhang: Zhejiang University
Harold Y. Hwang: Stanford University
Yanwu Xie: Zhejiang University
Nature Communications, 2019, vol. 10, issue 1, 1-6
Abstract:
Abstract The single-crystal SrTiO3 (001) has two different surface terminations, TiO2 and SrO. One most remarkable observation in previous studies is that only the heterointerfaces with TiO2-terminated SrTiO3, which usually combines with polar oxides such as LaAlO3, host an electron gas. Here we show that a robust electron gas can be generated between a non-polar oxide, CaHfO3, and SrTiO3 (001) with either termination. Unlike the well-known electron gas of LaAlO3/SrTiO3, the present one of CaHfO3/SrTiO3 essentially has no critical thickness of CaHfO3, can survive a long-time oxygen annealing at high temperature, and its transport properties are stable under exposure to water and other polar solvents. By electrostatic gating through CaHfO3, field-effect devices are demonstrated using CaHfO3/SrTiO3 heterointerfaces with both terminations. These results show that the electron gas reported in the present study is unique and promising for applications in oxide electronics.
Date: 2019
References: Add references at CitEc
Citations:
Downloads: (external link)
https://www.nature.com/articles/s41467-019-12036-5 Abstract (text/html)
Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
HTML/Text
Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12036-5
Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/
DOI: 10.1038/s41467-019-12036-5
Access Statistics for this article
Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie
More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().