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Updated: Apr 20, 2026

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Published on: June 28, 2018
Raman scattering signatures of Kitaev spin liquids in A(2)IrO(3) iridates with A=Na or Li
J Knolle1, Gia-Wei Chern2, D L Kovrizhin3
1Max Planck Institute for the Physics of Complex Systems, D-01187 Dresden, Germany.
Abstract:
We show how Raman spectroscopy can serve as a valuable tool for diagnosing quantum spin liquids (QSL). We find that the Raman response of the gapless QSL of the Kitaev-Heisenberg model exhibits signatures of spin fractionalization into Majorana fermions, which give rise to a broad signal reflecting their density of states, and Z(2) gauge fluxes, which also contribute a sharp feature. We discuss the current experimental situation and explore more generally the effect of breaking the integrability on response functions of Kitaev spin liquids.
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