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α−RuCl3: A spin-orbit assisted Mott insulator on a honeycomb lattice

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Plumb, K. W., Clancy, J. P., Sandilands, L. J., Shankar, V. Vijay, Hu, Y. F., Burch, K. S., Kee, Hae-Young, Kim, Young-June·2014·Physical Review B

Abstract

We examine the role of spin-orbit coupling in the electronic structure of $\ensuremath{\alpha}\ensuremath{-}{\mathrm{RuCl}}_{3}$, in which Ru ions in $4{d}^{5}$ configuration form a honeycomb lattice. Our x-ray absorption spectroscopy measurements at the Ru $L$ edges exhibit distinct spectral features associated with the presence of substantial spin-orbit coupling, as well as an anomalously large branching ratio. Furthermore the measured optical spectra can be described very well with first-principles electronic structure calculations obtained by taking into account both spin-orbit coupling and electron correlations. We propose that $\ensuremath{\alpha}\ensuremath{-}{\mathrm{RuCl}}_{3}$ is a spin-orbit assisted Mott insulator, and that the bond-dependent Kitaev interaction may be important for understanding magnetism of this compound.

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Metadata

Authors
Plumb, K. W., Clancy, J. P., Sandilands, L. J., Shankar, V. V., Hu, Y. F., Burch, K. S., Kee, H.-Y., & Kim, Y.-J.
Venue
Physical Review B
Published
2014-07-29
Volume
90
Issue
4
ISSN
  • 1098-0121 (ISSN-L)
  • 1550-235X
OpenAlex
W2009820981
Cited by
804
References
3
FWCI
24.89
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: α−RuCl3: A spin-orbit assisted Mott insulator on a honeycomb lattice. https://app.cochat.ai/papers/10.1103/physrevb.90.041112
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Plumb, K. W., Clancy, J. P., Sandilands, L. J., Shankar, V. V., Hu, Y. F., Burch, K. S., Kee, H.-Y., & Kim, Y.-J. (2014). α−RuCl3: A spin-orbit assisted Mott insulator on a honeycomb lattice. Physical Review B. https://doi.org/10.1103/physrevb.90.041112

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