The 81st JSAP Autumn Meeting, 2020

Presentation information

Oral presentation

3 Optics and Photonics » 3.1 Basic optics and frontier of optics

[9p-Z17-1~22] 3.1 Basic optics and frontier of optics

Wed. Sep 9, 2020 1:00 PM - 7:45 PM Z17

Atsushi Taguchi(Hokkaido Univ.), Wataru Inami(Shizuoka Univ.), Masahito Yamanaka(Nagoya Univ.), Atsushi Sugita(静大)

2:15 PM - 2:30 PM

[9p-Z17-4] Terahertz Magneto-Spectroscopy Mapping of the Low-Temperature Phase Transition of ErxY1-xFeO3

〇(D)Nicolas Marquez Peraca1, Xinwei Li1, Motoaki Bamba2,3, Chien-Lung Huang1, Xiaoxuan Ma4, Takuma Makihara1, Emilia Morosan1, Shixun Cao4, Junichiro Kono1 (1.Rice University, 2.Kyoto University, 3.PRESTO, 4.Shanghai University)

Keywords:ultrastrong, terahertz, orthoferrites

In this work, we have studied the low temperature properties of the rare-earth orthoferrite ErxY1-xFeO3 using terahertz (THz) time-domain magnetospectroscopy. Comparison of the theoretical predictions with actual observations revealed that the phase transition this material exhibits can be modeled using an extended Dicke Hamiltonian that incorporates short-range Er-Er exchange interactions, broadening our understanding of the role of cooperative effects in the superradiant phase transition.