Interfacial charge-transfer Mott state in iridate–nickelate superlattices
Abstract
Heterojunctions between dissimilar materials provide an opportunity to generate emergent properties not present in their individual components. These properties are often linked to interfacial charge transfer, an important mechanism allowing one to access and control novel quantum states. Here, we have grown unit-cell scale superlattices composed of 5 d S r I r O 3 and 3 d L a N i O 3 . We have discovered a massive interfacial charge transfer from Ir to Ni, triggering dramatic electronic and magnetic reconstructions at the interface that suppress strong spin–orbit coupling effects normally present in the iridates. These findings call for careful evaluation and reinterpretation of experiments on spin–orbit-driven physics in thin films and heterostructures based on prototypical 5 d transition metal oxides.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 16, 2019
- Source ID
- 10.1073/pnas.1907043116
Entities
People
- Alpha T. N'Diaye
- Banabir Pal
- Daniel Haskel
- David Vanderbilt
- Elke Arenholz
- Fangdi Wen
- Heung-sik Kim
- Jak Chakhalian
- John W Freeland
- Karin M. Rabe
- Kristjan Haule
- Lin Gu
- Michele Kotiuga
- Mikhail Kareev
- Padraic Shafer
- Qinghua Zhang
- Xiaoran Liu
- Yanwei Cao
- Yongseong Choi
Organizations
- Argonne National Laboratory
- Institute of Physics
- Lawrence Berkeley National Laboratory
- Ningbo Institute of Industrial Technology
- Rutgers University