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Title: 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:
ORCiD logo [1];  [1];  [1];  [2];  [3];  [4];  [5];  [1];  [1];  [1];  [3];  [4];  [3]; ORCiD logo [2];  [6];  [1]; ORCiD logo [1];  [1];  [1]
  1. Rutgers Univ., Piscataway, NJ (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Chinese Academy of Sciences (CAS), Beijing (China)
  5. Chinese Academy of Sciences, Zhejiang (China)
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Cornell Univ., Ithaca, NY (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Lawrence Berkeley National Lab. (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. 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., & 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 = {2019},
month = {9}
}

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    Works referencing / citing this record:

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