Dirac nodal lines and large spin Hall effect in the -perovskite iridate
Abstract
Nodal line semimetals with symmetry protected band structure offer a platform for the investigation of a number of emerging quantum phenomena. Using first-principles calculation combined with symmetry analysis, we demonstrate that Ba3TiIr2O9 hosts a Dirac nodal line (DNL) along the A-L direction of the Brillouin zone, protected by the glide reflection symmetry. In the presence of the spin-orbit coupling, even though the DNL along the A-L direction is protected, DNLs along other directions as well as multiple nodal loops present in the system gap out. The gapped out Dirac nodal loops act as a source of spin Berry curvature, resulting in a large spin Hall conductivity (≈300 $$^h_{\bar{e}}$$ Ω–1 cm–1). This suggests the possible application of the material as a spin current detector.
- Authors:
-
- Univ. of Missouri, Columbia, MO (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of Missouri, Columbia, MO (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE
- OSTI Identifier:
- 1577660
- Alternate Identifier(s):
- OSTI ID: 1560313
- Grant/Contract Number:
- FG02-00ER45818
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B
- Additional Journal Information:
- Journal Volume: 100; Journal Issue: 11; 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; Materials Science; Physics
Citation Formats
Bhowal, Sayantika, and Satpathy, S. Dirac nodal lines and large spin Hall effect in the 6H-perovskite iridate Ba3TiIr2O9. United States: N. p., 2019.
Web. doi:10.1103/physrevb.100.115101.
Bhowal, Sayantika, & Satpathy, S. Dirac nodal lines and large spin Hall effect in the 6H-perovskite iridate Ba3TiIr2O9. United States. https://doi.org/10.1103/physrevb.100.115101
Bhowal, Sayantika, and Satpathy, S. Tue .
"Dirac nodal lines and large spin Hall effect in the 6H-perovskite iridate Ba3TiIr2O9". United States. https://doi.org/10.1103/physrevb.100.115101. https://www.osti.gov/servlets/purl/1577660.
@article{osti_1577660,
title = {Dirac nodal lines and large spin Hall effect in the 6H-perovskite iridate Ba3TiIr2O9},
author = {Bhowal, Sayantika and Satpathy, S.},
abstractNote = {Nodal line semimetals with symmetry protected band structure offer a platform for the investigation of a number of emerging quantum phenomena. Using first-principles calculation combined with symmetry analysis, we demonstrate that Ba3TiIr2O9 hosts a Dirac nodal line (DNL) along the A-L direction of the Brillouin zone, protected by the glide reflection symmetry. In the presence of the spin-orbit coupling, even though the DNL along the A-L direction is protected, DNLs along other directions as well as multiple nodal loops present in the system gap out. The gapped out Dirac nodal loops act as a source of spin Berry curvature, resulting in a large spin Hall conductivity (≈300 $^h_{\bar{e}}$ Ω–1 cm–1). This suggests the possible application of the material as a spin current detector.},
doi = {10.1103/physrevb.100.115101},
journal = {Physical Review. B},
number = 11,
volume = 100,
place = {United States},
year = {Tue Sep 03 00:00:00 EDT 2019},
month = {Tue Sep 03 00:00:00 EDT 2019}
}
Web of Science
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Works referencing / citing this record:
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