<P>We report a temperature-dependent optical spectroscopic study of the Heisenberg-Kitaev magnet alpha-RuCl3. Our measurements reveal anomalies in the optical response near the magnetic ordering temperature. At higher temperatures, we observe a ...
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https://www.riss.kr/link?id=A107740637
2016
-
SCOPUS,SCIE
학술저널
195156
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P>We report a temperature-dependent optical spectroscopic study of the Heisenberg-Kitaev magnet alpha-RuCl3. Our measurements reveal anomalies in the optical response near the magnetic ordering temperature. At higher temperatures, we observe a ...
<P>We report a temperature-dependent optical spectroscopic study of the Heisenberg-Kitaev magnet alpha-RuCl3. Our measurements reveal anomalies in the optical response near the magnetic ordering temperature. At higher temperatures, we observe a redistribution of spectral weight over a broad energy range that is associated with nearest-neighbor spin-spin correlations. This finding is consistent with highly frustrated magnetic interactions and in agreement with theoretical expectations for this class of material. The optical data also reveal significant electron-hole interaction effects, including a bound excitonic state. These results demonstrate a clear coupling between charge and spin degrees of freedom and provide insight into the properties of thermally disordered Heisenberg-Kitaev magnets.</P>