Dirac nodal lines and large spin Hall effect in the -perovskite iridate
- Univ. of Missouri, Columbia, MO (United States)
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.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of Missouri, Columbia, MO (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE
- Grant/Contract Number:
- FG02-00ER45818
- OSTI ID:
- 1577660
- Alternate ID(s):
- OSTI ID: 1560313
- Journal Information:
- Physical Review. B, Vol. 100, Issue 11; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Study of nontrivial magnetism in transition metal based double perovskites
|
journal | February 2020 |
Intrinsic orbital and spin Hall effects in monolayer transition metal dichalcogenides
|
journal | July 2020 |
Study of Nontrivial Magnetism in 3$d$-5$d$ Transition Metal based Double Perovskites | text | January 2020 |
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