Unravelling oxygen-vacancy-induced electron transfer at SrTiO3-based heterointerfaces by transport measurement during growth.

Clicks: 270
ID: 42190
2019
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Steady

Ranked #23 of 53 articles by views in journal of physics condensed matter : an institute of physics journal

Most read Least read

Bar heights use a square-root scale.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
Numerous studies have showed that oxygen vacancies play an important role on the formation of two-dimensional electron gas (2DEG) at SrTiO<sub>3</sub>-based heterointerfaces. Previously, it is widely believed that the main mechanism is that the oxygen vacancies in SrTiO<sub>3</sub> directly contribute electrons to the 2DEG. Here we performed transport measurements during the creation of 2DEG for depositing amorphous LaAlO<sub>3</sub> on SrTiO<sub>3</sub> substrates and related heterostructures. Our result suggests that, unlike the previous viewpoint, in this kind of 2DEG the determinant mechanism is the electron transfer from the oxygen vacancies in the film grown on SrTiO<sub>3</sub>, rather than the oxygen vacancies in SrTiO<sub>3</sub> themselvies. This effect is so striking that an amorphous film of less than 10% monolayer coverage on SrTiO<sub>3</sub>, or equivalently 0.04 nm , can already generate a highly conducting 2DEG. The present result may has a general implication and provide a possible way to understand the long-standing debate on the origin of 2DEG at SrTiO<sub>3</sub>-based heterointerfaces.
Reference Key
chen2019unravellingjournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Chen, Zheng;Zhang, Meng;Ren, Tianshuang;Xie, Yanwu;
Journal journal of physics condensed matter : an institute of physics journal
Year 2019
DOI
10.1088/1361-648X/ab42af
URL
Keywords Keywords not found

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.