Similarities and Differences between and and Implications for Superconductivity
Abstract
The recent observation of superconductivity in hole-doped NdNiO2 has generated considerable attention. The similarities and differences between this infinite-layer nickelates and cuprates are still an open question. To address this issue we derive, via-principles calculations, essential facts related to the electronic structure and magnetism of R NiO2 (R = La , Nd) in comparison to their cuprate analog CaCuO2. From this detailed comparison, we find that R NiO2 are promising as cuprate analogs. Besides the much larger d-p energy splitting, and the presence of R 5d states near the Fermi energy in the parent compound, all other electronic-structure parameters seem to be favorable in the context of superconductivity as inferred from the cuprates. In particular, the large value of the longer-range hopping t' and the eg energy splitting are similar to those obtained in cuprates. Doping further acts to increase the cupratelike character of these nickelates by suppressing the self-doping effect of the R 5d bands.
- Authors:
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; Arizona State Univ., Tempe, AZ (United States)
- OSTI Identifier:
- 1599522
- Alternate Identifier(s):
- OSTI ID: 1598266
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Published Article
- Journal Name:
- Physical Review. X
- Additional Journal Information:
- Journal Name: Physical Review. X Journal Volume: 10 Journal Issue: 1; Journal ID: ISSN 2160-3308
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Botana, A. S., and Norman, M. R.. Similarities and Differences between LaNiO 2 and CaCuO 2 and Implications for Superconductivity. United States: N. p., 2020.
Web. doi:10.1103/PhysRevX.10.011024.
Botana, A. S., & Norman, M. R.. Similarities and Differences between LaNiO 2 and CaCuO 2 and Implications for Superconductivity. United States. https://doi.org/10.1103/PhysRevX.10.011024
Botana, A. S., and Norman, M. R.. Tue .
"Similarities and Differences between LaNiO 2 and CaCuO 2 and Implications for Superconductivity". United States. https://doi.org/10.1103/PhysRevX.10.011024.
@article{osti_1599522,
title = {Similarities and Differences between LaNiO 2 and CaCuO 2 and Implications for Superconductivity},
author = {Botana, A. S. and Norman, M. R.},
abstractNote = {The recent observation of superconductivity in hole-doped NdNiO2 has generated considerable attention. The similarities and differences between this infinite-layer nickelates and cuprates are still an open question. To address this issue we derive, via-principles calculations, essential facts related to the electronic structure and magnetism of R NiO2 (R = La , Nd) in comparison to their cuprate analog CaCuO2. From this detailed comparison, we find that R NiO2 are promising as cuprate analogs. Besides the much larger d-p energy splitting, and the presence of R 5d states near the Fermi energy in the parent compound, all other electronic-structure parameters seem to be favorable in the context of superconductivity as inferred from the cuprates. In particular, the large value of the longer-range hopping t' and the eg energy splitting are similar to those obtained in cuprates. Doping further acts to increase the cupratelike character of these nickelates by suppressing the self-doping effect of the R 5d bands.},
doi = {10.1103/PhysRevX.10.011024},
journal = {Physical Review. X},
number = 1,
volume = 10,
place = {United States},
year = {2020},
month = {2}
}
https://doi.org/10.1103/PhysRevX.10.011024
Web of Science
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