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- Jin, Hosub
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Dimensionality-Controlled Insulator-Metal Transition and Correlated Metallic State in 5d Transition Metal Oxides Srn+1IrnO3n+1 (n=1, 2, and infinity)
- Author(s)
- Moon, SJ, Jin, Hosub, Kim, KW, Choi, WS, Lee, YS, Yu, Jaejun, Cao, G, Sumi, A, Funakubo, H, Bernhard, C, Noh, TW
- Issued Date
- 2008-11
- Citation
- PHYSICAL REVIEW LETTERS, v.101, pp.226402
- Abstract
- We investigated the electronic structures of the 5d Ruddlesden-Popper series Srn+1IrnO3n+1 (n=1, 2, and ∞) using optical spectroscopy and first-principles calculations. As 5d orbitals are spatially more extended than 3d or 4d orbitals, it has been widely accepted that correlation effects are minimal in 5d compounds. However, we observed a Mott insulator-metal transition with a change of bandwidth as we increased n. In addition, the artificially synthesized perovskite SrIrO3 showed a very large mass enhancement of about 6, indicating that it was in a correlated metallic state.
- Publisher
- AMER PHYSICAL SOC
- ISSN
- 0031-9007
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