Carrier localization in perovskite nickelates from oxygen vacancies.

Clicks: 313
ID: 61431
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
Emerging

Ranked #108 of 292 articles by views in Proceedings of the National Academy of Sciences of the United States of America

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 292 in total.

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
Point defects, such as oxygen vacancies, control the physical properties of complex oxides, relevant in active areas of research from superconductivity to resistive memory to catalysis. In most oxide semiconductors, electrons that are associated with oxygen vacancies occupy the conduction band, leading to an increase in the electrical conductivity. Here we demonstrate, in contrast, that in the correlated-electron perovskite rare-earth nickelates, NiO ( is a rare-earth element such as Sm or Nd), electrons associated with oxygen vacancies strongly localize, leading to a dramatic decrease in the electrical conductivity by several orders of magnitude. This unusual behavior is found to stem from the combination of crystal field splitting and filling-controlled Mott-Hubbard electron-electron correlations in the Ni 3 orbitals. Furthermore, we show the distribution of oxygen vacancies in NdNiO can be controlled via an electric field, leading to analog resistance switching behavior. This study demonstrates the potential of nickelates as testbeds to better understand emergent physics in oxide heterostructures as well as candidate systems in the emerging fields of artificial intelligence.
Reference Key
kotiuga2019carrierproceedings Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Kotiuga, Michele;Zhang, Zhen;Li, Jiarui;Rodolakis, Fanny;Zhou, Hua;Sutarto, Ronny;He, Feizhou;Wang, Qi;Sun, Yifei;Wang, Ying;Aghamiri, Neda Alsadat;Hancock, Steven Bennett;Rokhinson, Leonid P;Landau, David P;Abate, Yohannes;Freeland, John W;Comin, Riccardo;Ramanathan, Shriram;Rabe, Karin M;
Journal Proceedings of the National Academy of Sciences of the United States of America
Year 2019
DOI
201910490
URL
Keywords
perovskite charge localization nickelates oxygen deficiency

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.