Terahertz spectroscopy in the pseudo-Kagome system Cu3Bi(SeO3)2O2Br
Abstract
Terahertz (THz) transmission spectra have been measured as a function of temperature and magnetic field on single crystals of Cu3Bi(SeO3)2O2Br. In time-domain THz spectra without magnetic field, two resonance absorptions are observed below the magnetic ordering temperature TN∼27.4 K. The corresponding resonance frequencies increase with decreasing temperature and reach energies of 1.28 and 1.23 meV at 3.5 K. Multifrequency electron spin resonance transmission spectra as a function of the applied magnetic field show the field dependence of four magnetic resonance modes, which can be modeled as a ferromagnetic resonance including demagnetization and anisotropy effects.
- Publication:
-
Physical Review B
- Pub Date:
- November 2012
- DOI:
- 10.1103/PhysRevB.86.174411
- arXiv:
- arXiv:1210.1343
- Bibcode:
- 2012PhRvB..86q4411W
- Keywords:
-
- 76.50.+g;
- 78.30.-j;
- 75.10.Hk;
- Ferromagnetic antiferromagnetic and ferrimagnetic resonances;
- spin-wave resonance;
- Infrared and Raman spectra;
- Classical spin models;
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- 5 pages, 3 figures. All comments are welcome and appreciated