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|Author(s):||Shin G. Chou; David F. Plusquellic; Paul E. Stutzman; Shuangzhen S. Wang; Edward J. Garboczi;|
|Title:||High Resolution THz Optical Absorption Study of Antiferromagnetic Magnons in Hematite (alpha-Fe2O3)|
|Published:||July 09, 2012|
|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|
|Pages:||pp. 16161 - 16166|
|Keywords:||non-destructive examination, THz metrology|
|Research Areas:||Optical Technology, Terahertz Metrology|
|DOI:||http://dx.doi.org/10.1021/jp3036567 (Note: May link to a non-U.S. Government webpage)|
|PDF version:||Click here to retrieve PDF version of paper (1MB)|