Temperature-dependent Raman spectra of Na2Co2TeO6 show phonon anomalies near 17, 30, 70, and 150 K and a broad magnetic continuum, supporting multiple phase transitions and frustrated spin excitations.
Yang et al., Significant thermal Hall effect in the 3d cobalt Kitaev system 22 Na2Co2TeO6, Phys
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Raman signature of multiple phase transitions and quasi-particle excitations in putative Kitaev spin liquid candidate Na2Co2TeO6
Temperature-dependent Raman spectra of Na2Co2TeO6 show phonon anomalies near 17, 30, 70, and 150 K and a broad magnetic continuum, supporting multiple phase transitions and frustrated spin excitations.