Journal
NEW JOURNAL OF PHYSICS
Volume 18, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/18/1/013045
Keywords
terahertz; magnet; nonlinear optics
Categories
Funding
- JSPS [KAKENHI 26286061, 26247052]
- Industry-Academia Collaborative R&D grant from the Japan Science and Technology Agency (JST)
- Grants-in-Aid for Scientific Research [26247052] Funding Source: KAKEN
Ask authors/readers for more resources
We report on the nonlinear magnetization dynamics of a HoFeO3 crystal induced by a strong terahertz magnetic field resonantly enhanced with a split ring resonator and measured with magneto-optical Kerr effect microscopy. The terahertz magnetic field induces a large change (similar to 40%) in the spontaneous magnetization. The frequency of the antiferromagnetic resonance decreases in proportion to the square of the magnetization change. A modified Landau-Lifshitz-Gilbert equation with a phenomenological nonlinear damping term quantitatively reproduced the nonlinear dynamics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available