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- W2889449571 abstract "While the enhancement of spin-space symmetry from the usual SU(2) to $mathrm{SU}(N)$ is promising for finding nontrivial quantum spin liquids, its realization in magnetic materials remains challenging. Here, we propose a new mechanism by which SU(4) symmetry emerges in the strong spin-orbit coupling limit. In ${d}^{1}$ transition metal compounds with edge-sharing anion octahedra, the spin-orbit coupling gives rise to strongly bond-dependent and apparently SU(4)-breaking hopping between the ${J}_{mathrm{eff}}=3/2$ quartets. However, in the honeycomb structure, a gauge transformation maps the system to an SU(4)-symmetric Hubbard model. In the strong repulsion limit at quarter filling, as realized in $ensuremath{alpha}text{ensuremath{-}}{mathrm{ZrCl}}_{3}$, the low-energy effective model is the SU(4) Heisenberg model on the honeycomb lattice, which cannot have a trivial gapped ground state and is expected to host a gapless spin-orbital liquid. By generalizing this model to other three-dimensional lattices, we also propose crystalline spin-orbital liquids protected by this emergent SU(4) symmetry and space group symmetries." @default.
- W2889449571 created "2018-09-07" @default.
- W2889449571 creator A5053113606 @default.
- W2889449571 creator A5077555000 @default.
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- W2889449571 date "2018-08-27" @default.
- W2889449571 modified "2023-10-16" @default.
- W2889449571 title "Emergent <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mi>SU</mml:mi><mml:mo stretchy=false>(</mml:mo><mml:mn>4</mml:mn><mml:mo stretchy=false>)</mml:mo></mml:mrow></mml:math> Symmetry in <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mi>α</mml:mi><mml:mtext>−</mml:mtext><mml:msub><mml:mrow><mml:mi>ZrCl</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math> and …" @default.
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- W2889449571 doi "https://doi.org/10.1103/physrevlett.121.097201" @default.
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- W2889449571 hasPublicationYear "2018" @default.
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