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  Massa, N.E.; del Campo, L.; Holldack, K.; Canizarès, A.; Ta Phuoc, V.; Kayser, P.; Alonso, J.A.: h-ErMnO₃ absorbance, reflectivity, and emissivity in the terahertz to mid-infrared from 2 to 1700 K: Carrier screening, Fröhlich resonance, small polarons, and bipolarons. Physical Review B 102 (2020), p. 134305-134321

10.1103/PhysRevB.102.134305
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