Interplay of spin-orbit interactions, dimensionality, and octahedral rotations in semimetallic SrIrO(3).

@article{Nie2015InterplayOS,
  title={Interplay of spin-orbit interactions, dimensionality, and octahedral rotations in semimetallic SrIrO(3).},
  author={Yuefeng Nie and Phil D. C. King and C. H. Kim and Masaki Uchida and H. I. Wei and Brendan D. Faeth and Jacob P. Ruf and Jacob P. C. Ruff and Lu Xie and X. Q. Pan and Craig J. Fennie and Darrell G. Schlom and Kyle M. Shen},
  journal={Physical review letters},
  year={2015},
  volume={114 1},
  pages={
          016401
        }
}
We employ reactive molecular-beam epitaxy to synthesize the metastable perovskite SrIrO(3) and utilize in situ angle-resolved photoemission to reveal its electronic structure as an exotic narrow-band semimetal. We discover remarkably narrow bands which originate from a confluence of strong spin-orbit interactions, dimensionality, and both in- and out-of-plane IrO(6) octahedral rotations. The partial occupation of numerous bands with strongly mixed orbital characters signals the breakdown of the… 

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References

SHOWING 1-10 OF 35 REFERENCES
Photoelectron Spectroscopy: Principles and Applications
1. Introduction and Basic Principles.- 2. Core Levels and Final States.- 3. Charge-Excitation Final States: Satellites.- 4. Continuous Satellites and Plasmon Satellites: XPS Photoemission in Nearly
"J."
however (for it was the literal soul of the life of the Redeemer, John xv. io), is the peculiar token of fellowship with the Redeemer. That love to God (what is meant here is not God’s love to men)
[Et al].
TLDR
A large population-based survey of veterans and nondeployed controls found evidence of a deployment-related Gulf War syndrome by factor analysis in Air Force veterans and controls.
Chem
  • C 117, 13339
  • 2013
Phys
  • Rev. B 87, 245109
  • 2013
Phys
  • Rev. Lett. 106, 136402
  • 2011
Phys
  • Rev. B 88, 155119
  • 2013
C
  • Bernhard, et al., Phys. Rev. Lett. 101, 226402
  • 2008
Recl
  • Trav. Chim. Pays-Bas 81, 495
  • 1962
...
...