Chou, S.
, Plusquellic, D.
, Stutzman, P.
, Wang, S.
and Garboczi, E.
(2012),
High Resolution THz Optical Absorption Study of Antiferromagnetic Magnons in Hematite (alpha-Fe2O3), Applied Physics Letters, [online], https://doi.org/10.1021/jp3036567
(Accessed October 8, 2024)
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High Resolution THz Optical Absorption Study of Antiferromagnetic Magnons in Hematite (alpha-Fe2O3)
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Author(s)
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Abstract
We report the high resolution optical measurement for the temperature dependence of the antiferromagnetic resonance (AFMR) transition in alpha-Fe2O3 between (0.5 and 10)cm-1. We found that below the Morin transition temperature when the spins are perfectly antiparallel, the AFMR transition could be clearly observed. The absorption peak position over a large temperature range are found to be in good agreement with theoretical analysis. The high spectral resolution optical measurements as demonstrated in this study allows unprecedented zero-field analysis of the AFMR excitation in a previously challenging spectral region, suggesting the frequency-resolved measurement platform could be extended for non-destructive examination applications for antiferromagnetic materials and devices.Citation
Applied Physics Letters
Volume
116
Pub Type
Journals
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Keywords
non-destructive examination, THz metrology
Citation
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Created July 9, 2012, Updated November 10, 2018