Self-limited kinetics of electron doping in correlated oxides
Abstract
Electron doping by hydrogenation can reversibly modify the electrical properties of complex oxides. We show that in order to realize large, fast, and reversible response to hydrogen, it is important to consider both the electron configuration on the transition metal 3d orbitals, as well as the thermodynamic stability in nickelates. Specifically, large doping-induced resistivity modulations ranging several orders of magnitude change are only observed for rare earth nickelates with small ionic radii on the A-site, in which case both electron correlation effects and the meta-stability of Ni3+ are important considerations. Charge doping via metastable incorporation of ionic dopants is of relevance to correlated oxide-based devices where advancing approaches to modify the ground state electronic properties is an important problem.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 20, 2015
- Source ID
- 10.1063/1.4927322
Entities
People
- Jak Chakhalian
- Jian Shi
- Jikun Chen
- Jun Jiang
- Lidong Chen
- Max Döbeli
- Nuofu Chen
- Shriram Ramanathan
- Srimanta Middey
- Xun Shi
- You Zhou
Organizations
- Air Force Office of Scientific Research
- Army Research Office
- Beijing Municipal Natural Science Foundation
- Chinese Academy of Sciences
- ETH Zurich
- Gordon and Betty Moore Foundation
- Harvard University
- North China Electric Power University
- Shanghai Institute of Ceramics
- University of Arkansas