Terahertz optical activity near crystal field transitions of Tm3+ ions in magnetoelectric alumoborates
- 1.
TU Wien
Description
File format: "OriginPro" (OriginLab Corporation)
The file "TmAl3(BO3)4_cCut(0.179)_rotation.OPJ" contains the transmission spectra and polarization rotation angle of the c-cut TmAl3(BO3 )4 sample of thickness d = 0.179 mm for the ac magnetic field h⊥c axis. The spectrum for the a-cut is added for comparison to demonstrate additional resonance modes in the spectrum for ν > 32 cm−1. The theoretical curves represent the Lorenztian fits to the data using Fresnel transmission expression for the plane-parallel sample.
The file "Tm0.05Yb0.1Y0.85Al3(BO3)4_cCut(3.547)_rotation.OPJ" contains the transmission spectra and the polarization rotation angle of the c-cut Tm0.05Yb0.1Y0.85Al3(BO3 )4 sample (d = 3.547 mm) for the ac magnetic field h⊥c axis. The theoretical curves represent the Lorenztian fits to the data using Fresnel transmission expression for the plane-parallel sample.
Abstract (English)
These are the data to the paper:
A. M. Kuzmenko, V. Yu. Ivanov, S. V. Garnov, A. Shuvaev, A. Pimenov, K. N. Boldyrev, I. A. Gudim, and A. A. Mukhin
“Terahertz optical activity near crystal field transitions of Tm3+ ions in magnetoelectric alumoborates”
Phys. Rev. B 113, 024418 (2026). https://doi.org/10.1103/d17t-j7rk
arXiv:2604.02193
Abstract: Crystal field (CF) excitations in the ground multiplet 3H6 of Tm3+ ions were investigated using terahertz transmission spectra of magnetoelectric (ME) TmAl3(BO3 )4 and Tm0.05Yb0.1Y0.85Al3(BO3 )4. These excitations were identified as mainly magnetic dipole transitions from the ground singlet A1 to the next excited doublet
E, split by the CF of the D3 symmetry. The fine structure of the modes was resolved at low temperatures. It manifested differently in lightly doped and in pure Tm borates, consistent with different distortions of the local CF with D3 symmetry. Strong natural optical activity was observed near the CF transitions resulting in
a polarization plane rotation up to 25°. The optical activity is quantitatively described by contributions from magnetic and electric dipole transitions to dynamic ME susceptibility and considering the classification of local distortions.
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- Is supplement to
- Publication: 10.1103/d17t-j7rk (DOI)
Dates
- Available
- 2026-05-20