Presentation Information
[We-A2-E-05]Magnetic Polarons Driving Colossal Terahertz Magnetoresistance in EuZn2P2
Esteban Marulanda1, Mateus Dutra2, Nicolas M. Kawahala1, Eduardo D. Stefanato1, Julian Munevar3, Marcos A. Avila2, 〇Felix Hernandez1 (1. Univ. of São Paulo (Brazil), 2. Univ. Federal do ABC (Brazil), 3. Univ. del Valle (Colombia))
Magnetoterahertz spectroscopy in the Zintl antiferromagnet EuZn2P2 reveals strongly frequency-dependent optical conductivity linked to magnetic polarons. The negative terahertz magnetoresistance reaches ~90% at 1.5 THz near the Néel temperature, far exceeding the zero-frequency response.