Metzger, T. W. J., Grishunin, K. A., Afanasiev, D., Dubrovin, R. M., Mashkovich, E. A., Pisarev, R. V. and Kimel, A. V. (2022). Effect of antiferromagnetic order on a propagating single-cycle THz pulse. Appl. Phys. Lett., 121 (25). MELVILLE: AIP Publishing. ISSN 1077-3118

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Abstract

Employing polarization sensitive terahertz (THz) transmission spectroscopy, we explored how the waveform of initially single-cycle linearly polarized THz pulses changes upon propagation through a thick antiferromagnetic crystal of CoF2. The changes upon propagation through CoF2 are found to depend strongly on both the incoming polarization and temperature. In particular, the ellipticity and polarization rotation acquired by initially linearly polarized light are quantified and explained in terms of magnetic linear birefringence and dichroism. Although the magneto-optical effects are often considered to be relatively weak, our experiments reveal that the polarization of the THz pulse substantially changes along the pulse duration. The pulse shape is further complicated by features assigned to the formation of magnon-polaritons. The findings clearly show the importance of accounting for propagation effects in antiferromagnetic spintronics and magnonics.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Metzger, T. W. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Grishunin, K. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Afanasiev, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dubrovin, R. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mashkovich, E. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pisarev, R. V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kimel, A. V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-677564
DOI: 10.1063/5.0124656
Journal or Publication Title: Appl. Phys. Lett.
Volume: 121
Number: 25
Date: 2022
Publisher: AIP Publishing
Place of Publication: MELVILLE
ISSN: 1077-3118
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
RESONANCEMultiple languages
Physics, AppliedMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/67756

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