Interfacial charge-transfer Mott state in iridate–nickelate superlattices
Abstract
We investigate SrIrO3/LaNiO3 superlattices in which we observe a full electron transfer at the interface from Ir to Ni, triggering a massive structural and electronic reconstruction. Through experimental characterization and first-principles calculations, we determine that a large crystal field splitting from the distorted interfacial IrO6 octahedra surprisingly dominates over the spin–orbit coupling and together with the Hund’s coupling results in the high-spin (S = 1) configurations on both the Ir and Ni sites. This demonstrates the power of interfacial charge transfer in coupling lattice, charge, orbital, and spin degrees of freedom, opening fresh avenues of investigation of quantum states in oxide superlattices.
- Authors:
-
[1];
[2];
[1];
- Rutgers Univ., Piscataway, NJ (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Chinese Academy of Sciences (CAS), Beijing (China)
- Chinese Academy of Sciences, Zhejiang (China)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Cornell Univ., Ithaca, NY (United States)
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); Gordon and Betty Moore Foundation; US Department of the Navy, Office of Naval Research (ONR); USDOD; National Science Foundation (NSF)
- OSTI Identifier:
- 1574930
- Alternate Identifier(s):
- OSTI ID: 1637298
- Grant/Contract Number:
- AC02-06CH11357; SC0012375; GBMF4534; N000014-17-1-2770; DMR-1629346; DMR-1629059; N00014-16-1-2951
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Proceedings of the National Academy of Sciences of the United States of America
- Additional Journal Information:
- Journal Volume: 116; Journal Issue: 40; Journal ID: ISSN 0027-8424
- Publisher:
- National Academy of Sciences
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; interfacial charge transfer; iridates; nickelates; superlattice
Citation Formats
Liu, Xiaoran, Kotiuga, Michele, Kim, Heung-Sik, N’Diaye, Alpha T., Choi, Yongseong, Zhang, Qinghua, Cao, Yanwei, Kareev, Mikhail, Wen, Fangdi, Pal, Banabir, Freeland, John W., Gu, Lin, Haskel, Daniel, Shafer, Padraic, Arenholz, Elke, Haule, Kristjan, Vanderbilt, David, Rabe, Karin M., and Chakhalian, Jak. Interfacial charge-transfer Mott state in iridate–nickelate superlattices. United States: N. p., 2019.
Web. doi:10.1073/pnas.1907043116.
Liu, Xiaoran, Kotiuga, Michele, Kim, Heung-Sik, N’Diaye, Alpha T., Choi, Yongseong, Zhang, Qinghua, Cao, Yanwei, Kareev, Mikhail, Wen, Fangdi, Pal, Banabir, Freeland, John W., Gu, Lin, Haskel, Daniel, Shafer, Padraic, Arenholz, Elke, Haule, Kristjan, Vanderbilt, David, Rabe, Karin M., & Chakhalian, Jak. Interfacial charge-transfer Mott state in iridate–nickelate superlattices. United States. https://doi.org/10.1073/pnas.1907043116
Liu, Xiaoran, Kotiuga, Michele, Kim, Heung-Sik, N’Diaye, Alpha T., Choi, Yongseong, Zhang, Qinghua, Cao, Yanwei, Kareev, Mikhail, Wen, Fangdi, Pal, Banabir, Freeland, John W., Gu, Lin, Haskel, Daniel, Shafer, Padraic, Arenholz, Elke, Haule, Kristjan, Vanderbilt, David, Rabe, Karin M., and Chakhalian, Jak. Mon .
"Interfacial charge-transfer Mott state in iridate–nickelate superlattices". United States. https://doi.org/10.1073/pnas.1907043116. https://www.osti.gov/servlets/purl/1574930.
@article{osti_1574930,
title = {Interfacial charge-transfer Mott state in iridate–nickelate superlattices},
author = {Liu, Xiaoran and Kotiuga, Michele and Kim, Heung-Sik and N’Diaye, Alpha T. and Choi, Yongseong and Zhang, Qinghua and Cao, Yanwei and Kareev, Mikhail and Wen, Fangdi and Pal, Banabir and Freeland, John W. and Gu, Lin and Haskel, Daniel and Shafer, Padraic and Arenholz, Elke and Haule, Kristjan and Vanderbilt, David and Rabe, Karin M. and Chakhalian, Jak},
abstractNote = {We investigate SrIrO3/LaNiO3 superlattices in which we observe a full electron transfer at the interface from Ir to Ni, triggering a massive structural and electronic reconstruction. Through experimental characterization and first-principles calculations, we determine that a large crystal field splitting from the distorted interfacial IrO6 octahedra surprisingly dominates over the spin–orbit coupling and together with the Hund’s coupling results in the high-spin (S = 1) configurations on both the Ir and Ni sites. This demonstrates the power of interfacial charge transfer in coupling lattice, charge, orbital, and spin degrees of freedom, opening fresh avenues of investigation of quantum states in oxide superlattices.},
doi = {10.1073/pnas.1907043116},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 40,
volume = 116,
place = {United States},
year = {Mon Sep 16 00:00:00 EDT 2019},
month = {Mon Sep 16 00:00:00 EDT 2019}
}
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