: An inhomogeneous Hubbard system
Abstract
In a combined experimental and theoretical study, we investigate the properties of Sr2Ir1-xRhxO4. Here, from the branching ratios of the L-edge isotropic x-ray absorption spectra, we determine that the spin-orbit coupling is remarkably independent of x for both iridium and rhodium sites. DFT + U calculations show that the doping is close to isoelectronic and introduces impurity bands of predominantly rhodium character close to the lower Hubbard band. Overlap of these two bands leads to metallic behavior. Since the low-energy states for x < 0.5 have predominantly jeff = 1/2 character, we suggest that the electronic properties of this material can be described by an inhomogeneous Hubbard model, where the on-site energies change due to local variations in the spin-orbit interaction strength combined with additional changes in binding energy.
- Authors:
-
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Korea Advanced Institute of Science and Technology, Daejeon (Korea)
- Argonne National Lab. (ANL), Argonne, IL (United States); Washington Univ., St. Louis, MO (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States); Lab. Nacional de Luz Sincrotron (LNLS), Sao Paulo (Brazil); Univ. Estadual de Campinas, Sao Paulo (Brazil)
- Lab. Nacionnal de Luz Sincrotron (LNLS), Sao Paulo (Brazil)
- Univ. of Kentucky, Lexington, KY (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States); Northern Illinois Univ., DeKalb, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Scientific User Facilities Division; Materials Sciences and Engineering Division; National Research Foundation of Korea (NRF); USDOE
- OSTI Identifier:
- 1393967
- Alternate Identifier(s):
- OSTI ID: 1212491
- Grant/Contract Number:
- AC02-06CH11357; FG02-03ER46097; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Volume: 92; Journal Issue: 8; Journal ID: ISSN 1098-0121
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Chikara, Shalinee, Haskel, Daniel, Sim, Jae -Hoon, Kim, Heung -Sik, Chen, Cheng -Chien, Fabbris, G., Veiga, L. S. I., Souza-Neto, N. M., Terzic, J., Butrouna, K., Cao, G., Han, Myung Joon, and van Veenendaal, Michel. Sr2Ir1–xRhxO4(x<0.5) : An inhomogeneous jeff=12 Hubbard system. United States: N. p., 2015.
Web. doi:10.1103/PhysRevB.92.081114.
Chikara, Shalinee, Haskel, Daniel, Sim, Jae -Hoon, Kim, Heung -Sik, Chen, Cheng -Chien, Fabbris, G., Veiga, L. S. I., Souza-Neto, N. M., Terzic, J., Butrouna, K., Cao, G., Han, Myung Joon, & van Veenendaal, Michel. Sr2Ir1–xRhxO4(x<0.5) : An inhomogeneous jeff=12 Hubbard system. United States. https://doi.org/10.1103/PhysRevB.92.081114
Chikara, Shalinee, Haskel, Daniel, Sim, Jae -Hoon, Kim, Heung -Sik, Chen, Cheng -Chien, Fabbris, G., Veiga, L. S. I., Souza-Neto, N. M., Terzic, J., Butrouna, K., Cao, G., Han, Myung Joon, and van Veenendaal, Michel. Sat .
"Sr2Ir1–xRhxO4(x<0.5) : An inhomogeneous jeff=12 Hubbard system". United States. https://doi.org/10.1103/PhysRevB.92.081114. https://www.osti.gov/servlets/purl/1393967.
@article{osti_1393967,
title = {Sr2Ir1–xRhxO4(x<0.5) : An inhomogeneous jeff=12 Hubbard system},
author = {Chikara, Shalinee and Haskel, Daniel and Sim, Jae -Hoon and Kim, Heung -Sik and Chen, Cheng -Chien and Fabbris, G. and Veiga, L. S. I. and Souza-Neto, N. M. and Terzic, J. and Butrouna, K. and Cao, G. and Han, Myung Joon and van Veenendaal, Michel},
abstractNote = {In a combined experimental and theoretical study, we investigate the properties of Sr2Ir1-xRhxO4. Here, from the branching ratios of the L-edge isotropic x-ray absorption spectra, we determine that the spin-orbit coupling is remarkably independent of x for both iridium and rhodium sites. DFT + U calculations show that the doping is close to isoelectronic and introduces impurity bands of predominantly rhodium character close to the lower Hubbard band. Overlap of these two bands leads to metallic behavior. Since the low-energy states for x < 0.5 have predominantly jeff = 1/2 character, we suggest that the electronic properties of this material can be described by an inhomogeneous Hubbard model, where the on-site energies change due to local variations in the spin-orbit interaction strength combined with additional changes in binding energy.},
doi = {10.1103/PhysRevB.92.081114},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 8,
volume = 92,
place = {United States},
year = {Sat Aug 15 00:00:00 EDT 2015},
month = {Sat Aug 15 00:00:00 EDT 2015}
}
Web of Science
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Works referencing / citing this record:
Preferential quenching of 5 d antiferromagnetic order in Sr 3 (Ir 1− x Mn x ) 2 O 7
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Competition between disorder and Coulomb interaction in a two-dimensional plaquette Hubbard model
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Charge partitioning and anomalous hole doping in Rh-doped
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