Two iridates, two models, and two approaches: A comparative study on magnetism in three-dimensional honeycomb materials
@article{Lee2016TwoIT, title={Two iridates, two models, and two approaches: A comparative study on magnetism in three-dimensional honeycomb materials}, author={Eric Kin-Ho Lee and Jeffrey G. Rau and Yong Baek Kim}, journal={Physical Review B}, year={2016}, volume={93}, pages={184420} }
Two recent theoretical works studied the role of Kitaev interactions in the newly observed incommensurate magnetic order in the hyper-honeycomb ($\ensuremath{\beta}\ensuremath{-}{\mathrm{Li}}_{2}{\mathrm{IrO}}_{3}$) and stripy-honeycomb ($\ensuremath{\gamma}\ensuremath{-}{\mathrm{Li}}_{2}{\mathrm{IrO}}_{3}$) iridates. Each of these works analyzed a different model ($JK\mathrm{\ensuremath{\Gamma}}$ versus coupled zigzag chain model) using a contrasting method (classical versus soft-spin analysis…
25 Citations
Field evolution of low-energy excitations in the hyperhoneycomb magnet
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We investigate the electronic properties of the three-dimensional stripyhoneycomb $\gamma$-Li$_2$IrO$_3$ via relativistic density functional theory calculations as well as exact diagonalization of…
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Li7
NMR study
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Detailed magnetization, specific heat, and $^7$Li nuclear magnetic resonance (NMR) measurements on single crystals of the hyperhoneycomb Kitaev magnet $\beta$-Li$_2$IrO$_3$ are reported. At high…
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It is shown that three-dimensional Kitaev materials with nonsymmorphic symmetries can provide a great opportunity for controlling symmetry-protected topological nodal magnons and how such topological magnons can be controlled by changing the symmetry of the underlying spin-exchange interactions.
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- 2018
The family of "Kitaev materials" provides an ideal platform to study quantum spin liquids and their neighboring magnetic orders. Motivated by the possibility of a quantum spin liquid ground state in…