[Th-A2-B] Novel optoelectrical phenomena in 2D materials

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)

[Th-A2-B-01] Hybrid Spin–Lattice Excitations in FePS₃ Revealed by Terahertz Spectroscopy

〇Eduardo Stefanato¹, Ana Carolina Brito², Nicolas Kawahala¹, Ingrid Barcelos², Felix Hernandez¹ (1. Univ. of São Paulo (Brazil), 2. Brazilian Synchrotron Light Lab. (Brazil))

Terahertz time-domain spectroscopy reveals two temperature- and field-dependent resonances in FePS₃, indicating hybrid spin–lattice excitations. Their evolution across the Néel transition and persistence above it suggest magnon–phonon coupling and paramagnon-like behavior in the terahertz regime.