Sr3Ir2O7F2: Topochemical conversion of a relativistic Mott state into a spin-orbit driven band insulator
- Title
- Sr3Ir2O7F2: Topochemical conversion of a relativistic Mott state into a spin-orbit driven band insulator
- Author
- 문순재
- Keywords
- NEUTRON-DIFFRACTION; FLUORINE INSERTION; OXIDE; IRIDIUM
- Issue Date
- 2018-10
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW B, v. 98, no. 15, Article no. 155128
- Abstract
- The topochemical transformation of single crystals of Sr3Ir2O7 into Sr3Ir2O7F2 is reported via fluorine insertion. Characterization of the newly formed Sr3Ir2O7F2 phase shows a nearly complete oxidation of Ir4+ cations into Ir5+ that in turn drives the system from an antiferromagnetic Mott insulator with a half-filled J(eff) = 1/2 band into a nonmagnetic J = 0 band insulator. First principles calculations reveal a remarkably flat insertion energy that locally drives the fluorination process to completion. Band structure calculations support the formation of a band insulator whose charge gap relies on the strong spin-orbit coupling inherent in the Ir metal ions of this compound.
- URI
- https://journals.aps.org/prb/abstract/10.1103/PhysRevB.98.155128https://repository.hanyang.ac.kr/handle/20.500.11754/120290
- ISSN
- 2469-9950; 2469-9969
- DOI
- 10.1103/PhysRevB.98.155128
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML