Article,

Spin-orbit excitons in a correlated metal: Raman scattering study of Sr$_2$RhO$_4$

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Phys. Rev. Lett., 132 (11): 116502 (Mar 14, 2024)
DOI: 10.1103/PhysRevLett.132.116502

Abstract

A combined Raman scattering and theoretical study of spin-orbit excitations in Sr$_2$RhO$_4$ reveals unusual but well-defined excitations around 230 meV that are excitonic transitions between the spin-orbit multiplets of the Rh ions, excitations analogous to those recently observed in the Mott insulators Sr$_2$IrO$_4$ and RuCl$_3$.

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