Photoemission and dynamical mean field theory study of electronic correlations in a metal thin film
Abstract
Perovskite rhodates are characterized by intermediate strengths of both electronic correlation as well as spinorbit coupling (SOC) and usually behave as moderately correlated metals. A recent publication [Phys. Rev. B 95, 245121 (2017)] on epitaxial SrRhO3 thin films reported a bad-metallic behavior and suggested the occurrence of antiferromagnetism below 100 K. We have further studied this SrRhO3 thin film by hard x-ray photoemission spectroscopy and found a very small density of states (DOS) at the Fermi level (E-F), which is consistent with the previously reported bad-metallic behavior. However, the absence of DOS persists up to room temperature, which contradicts the explanation of antiferromagnetic transition at similar to 100 K. We also employed electronic structure calculations within the framework of density functional theory and dynamical mean-field theory. In contrast to the photoemission results, our calculations indicate metallic behaviors of both bulk SrRhO3 and the SrRhO3 thin film, and a stronger correlation effect was observed in the thin film than that in the bulk. The calculated uniform magnetic susceptibility is substantially larger in the thin film than that in the bulk. We also investigated the role of SOC and found only a moderate modulation of the band structure. Hence SOC is notmore »
- Authors:
-
- Chinese Academy of Sciences (CAS), Beijing (China). Inst. of High Energy Physics (IHEP); Univ. of Hyogo (Japan); Univ. of Tokyo (Japan)
- Rutgers Univ., Piscataway, NJ (United States); Collège de France, Paris (France)
- Jozef Stefan Inst. (IJS), Ljubljana (Slovenia)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Univ. of Hyogo (Japan)
- Japan Synchrotron Radiation Research Inst. (JASRI), Hyogo (Japan)
- Univ. of Arkansas, Little Rock, AR (United States)
- Univ. of Hyogo (Japan); Univ. of Tokyo (Japan)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Org.:
- Japan Society for the Promotion of Science (JSPS); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; National Science Foundation (NSF); Slovenian Research Agency (ARRS); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1606787
- Alternate Identifier(s):
- OSTI ID: 1601697; OSTI ID: 1632827
- Grant/Contract Number:
- AC05-00OR22725; 17F17327; AC02-06CH11357; NSF DMR-1733071
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 101; Journal Issue: 8; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE
Citation Formats
Zhang, Yujun, Kim, Minjae, Mravlje, Jernej, Sohn, Changhee, Choi, Yongseong, Strempfer, Joerg, Hotta, Yasushi, Yasui, Akira, Nichols, John, Lee, Ho Nyung, and Wadati, Hiroki. Photoemission and dynamical mean field theory study of electronic correlations in a t2g5 metal SrRhO3 thin film. United States: N. p., 2020.
Web. doi:10.1103/PhysRevB.101.085134.
Zhang, Yujun, Kim, Minjae, Mravlje, Jernej, Sohn, Changhee, Choi, Yongseong, Strempfer, Joerg, Hotta, Yasushi, Yasui, Akira, Nichols, John, Lee, Ho Nyung, & Wadati, Hiroki. Photoemission and dynamical mean field theory study of electronic correlations in a t2g5 metal SrRhO3 thin film. United States. https://doi.org/10.1103/PhysRevB.101.085134
Zhang, Yujun, Kim, Minjae, Mravlje, Jernej, Sohn, Changhee, Choi, Yongseong, Strempfer, Joerg, Hotta, Yasushi, Yasui, Akira, Nichols, John, Lee, Ho Nyung, and Wadati, Hiroki. Mon .
"Photoemission and dynamical mean field theory study of electronic correlations in a t2g5 metal SrRhO3 thin film". United States. https://doi.org/10.1103/PhysRevB.101.085134. https://www.osti.gov/servlets/purl/1606787.
@article{osti_1606787,
title = {Photoemission and dynamical mean field theory study of electronic correlations in a t2g5 metal SrRhO3 thin film},
author = {Zhang, Yujun and Kim, Minjae and Mravlje, Jernej and Sohn, Changhee and Choi, Yongseong and Strempfer, Joerg and Hotta, Yasushi and Yasui, Akira and Nichols, John and Lee, Ho Nyung and Wadati, Hiroki},
abstractNote = {Perovskite rhodates are characterized by intermediate strengths of both electronic correlation as well as spinorbit coupling (SOC) and usually behave as moderately correlated metals. A recent publication [Phys. Rev. B 95, 245121 (2017)] on epitaxial SrRhO3 thin films reported a bad-metallic behavior and suggested the occurrence of antiferromagnetism below 100 K. We have further studied this SrRhO3 thin film by hard x-ray photoemission spectroscopy and found a very small density of states (DOS) at the Fermi level (E-F), which is consistent with the previously reported bad-metallic behavior. However, the absence of DOS persists up to room temperature, which contradicts the explanation of antiferromagnetic transition at similar to 100 K. We also employed electronic structure calculations within the framework of density functional theory and dynamical mean-field theory. In contrast to the photoemission results, our calculations indicate metallic behaviors of both bulk SrRhO3 and the SrRhO3 thin film, and a stronger correlation effect was observed in the thin film than that in the bulk. The calculated uniform magnetic susceptibility is substantially larger in the thin film than that in the bulk. We also investigated the role of SOC and found only a moderate modulation of the band structure. Hence SOC is not expected to significantly affect the electronic correlation in SrRhO3. Extrinsic effects of finite-thickness effects beyond our calculations and localization effects may play important roles to induce the negligible spectral weight at E-F.},
doi = {10.1103/PhysRevB.101.085134},
journal = {Physical Review B},
number = 8,
volume = 101,
place = {United States},
year = {Mon Feb 24 00:00:00 EST 2020},
month = {Mon Feb 24 00:00:00 EST 2020}
}
Web of Science
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