期刊
PHYSICS LETTERS A
卷 384, 期 14, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.physleta.2020.126283
关键词
Quasi two dimensional electron gas; Oxides; Spin coating; Transport properties
资金
- National Natural Science Foundation of China [51572222, 11604265, 61471301]
Despite of extensive researches about oxide heterointerfaces, preparing method and intrinsic mechanism are all challenging topics. Here, we generate a series of stable quasi two dimensional electron gases (q-2DEGs) at yttrium aluminum oxides/strontium titanate (YAO/STO) heterointerfaces by the spin coating for the first time. It is found that the thickness and the stoichiometry ratio are the key factors for the creation of q-2DEG, which is formed under the premise of thickness (about 81.1 similar to 356.4 nm) and the rich-Al (A1:Y >= 1:1). The underlying mechanism can be attributed to oxygen vacancies derived from the redox reaction between YAO film and STO substrate. In addition, the conductive behavior can be modulated by the light illumination and the value of photoinduced change reaches 153.7% at low temperature. This work paves a novel way to fabricate 2DEG massively and helpful for a deep understanding about the conductive mechanism of oxide heterostructures. (C) 2020 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据