Anomalous Spectroscopical Effects in an Antiferromagnetic Semiconductor
Michal Hubert, Tom\'a\v{s} Male\v{c}ek, Kyo-Hoon Ahn, Martin, M\'i\v{s}ek, Jakub \v{Z}elezn\'y, Franti\v{s}ek M\'aca, Gunther Springholz,, Martin Veis, Karel V\'yborn\'y
TL;DR
This paper investigates magnetic circular dichroism (MCD) effects in antiferromagnetic MnTe thin films, exploring their microscopic mechanisms at optical frequencies following recent studies of anomalous Hall effects.
Contribution
It reports the first observation and analysis of MCD in the optical range in antiferromagnetic MnTe, linking it to underlying microscopic mechanisms.
Findings
MCD observed in optical frequencies in MnTe
Microscopic mechanisms of MCD in antiferromagnets discussed
Potential implications for antiferromagnetic spintronics
Abstract
Following the recent observation of anomalous Hall effect in antiferromagnetic hexagonal MnTe thin films, related phenomena at finite frequencies have come into focus. Magnetic circular dichroism (MCD) is the key material property here. In the x-ray range, the XMCD has already been demonstrated and used to visualise domains via photoemission electron microscopy (PEEM). Here we report on MCD in optical range and discuss its microscopic mechanism.
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