We are happy to announce a talk next Friday, 06.12., 11:00 at the Tandem Labor, Room 308 (Erwin-Rommel-Straße 1, second floor), entitled „A mesmerizing treasure box of magnetism and light-matter interaction: The polar antiferromagnet Fe₂Mo₃O₈ and its metamagnetic phases“.
The talk will be held by Dr. Joachim Deisenhofer from the Unicersity of Augsburg and is open to everyone. The talk is given live at room 308, 2nd floor, Erwin-Rommel-Straße 1, Erlangen.
Abstract:
The polar antiferromagnet Fe₂Mo₃O₈ is a real treasure box of interesting optical magnetoelectric effects and cross-coupling phenomena, which can be tuned by moderate magnetic fields and/or diluting the magnetic Fe ions by non-magnetic Zn.
Starting from our standard procedure of measuring the low-lying excitations using time-domain THz spectroscopy in an antiferromagnet such as Fe₂Mo₃O₈, we encountered several “unconventional” effects, which I will discuss in this talk. This comprises effects like the non-reciprocal directional dichroism, vacuum Rabi oscillations, and features such as “thickness dependent” g-factors of the low-lying modes. Our current understanding of these excitations is based on the successful modelling of the spectra by the Fe₂+ multiplet states [1], while other studies invoke a hybrid nature of mixed phonon-magnon modes [2,3].
[1] K. V. Vasin, A. Strinic, F. Schilberth, S. Reschke, L. Prodan, V. Tsurkan, A. R. Nurmukhametov, M. V. Eremin, I. Kezsmarki, J. Deisenhofer, PRB 110, 054401 (2024).
[2] F. Wu et al., Nat. Phys. (2023) 10.1038/s41567-023-02210-4.
[3] S. Bao et al., Nat Commun 14, 6093 (2023). https://doi.org/10.1038/s41467-023-41791-9
We are happy to announce a talk next Friday, 06.12., 11:00 at the Tandem Labor, Room 308 (Erwin-Rommel-Straße 1, second floor), entitled „A mesmerizing treasure box of magnetism and light-matter interaction: The polar antiferromagnet Fe₂Mo₃O₈ and its metamagnetic phases“.
The talk will be held by Dr. Joachim Deisenhofer from the Unicersity of Augsburg and is open to everyone. The talk is given live at room 308, 2nd floor, Erwin-Rommel-Straße 1, Erlangen.
Abstract:
The polar antiferromagnet Fe₂Mo₃O₈ is a real treasure box of interesting optical magnetoelectric effects and cross-coupling phenomena, which can be tuned by moderate magnetic fields and/or diluting the magnetic Fe ions by non-magnetic Zn.
Starting from our standard procedure of measuring the low-lying excitations using time-domain THz spectroscopy in an antiferromagnet such as Fe₂Mo₃O₈, we encountered several “unconventional” effects, which I will discuss in this talk. This comprises effects like the non-reciprocal directional dichroism, vacuum Rabi oscillations, and features such as “thickness dependent” g-factors of the low-lying modes. Our current understanding of these excitations is based on the successful modelling of the spectra by the Fe₂+ multiplet states [1], while other studies invoke a hybrid nature of mixed phonon-magnon modes [2,3].
[1] K. V. Vasin, A. Strinic, F. Schilberth, S. Reschke, L. Prodan, V. Tsurkan, A. R. Nurmukhametov, M. V. Eremin, I. Kezsmarki, J. Deisenhofer, PRB 110, 054401 (2024).
[2] F. Wu et al., Nat. Phys. (2023) 10.1038/s41567-023-02210-4.
[3] S. Bao et al., Nat Commun 14, 6093 (2023). https://doi.org/10.1038/s41467-023-41791-9