Journal
APPLIED PHYSICS EXPRESS
Volume 10, Issue 4, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/APEX.10.045601
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Funding
- Grants-in-Aid for Scientific Research [15K13622, 15H03522] Funding Source: KAKEN
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Tetrahedrite (Cu12Sb4S13) is a new type of thermoelectric material with an extremely low thermal conductivity attributed to the anomalous large thermal vibration of specific Cu sites. The tetrahedrite crystal was observed from the [111] direction by high-angle annular dark-field (HAADF) imaging and the image intensity was found to be 64% lower at specific sites. This could be explained by the blurring of the intensity distribution owing to a large atomic displacement, suggesting that anomalous large thermal vibrations at specific sites in the crystal can be distinguished in HAADF images. (C) 2017 The Japan Society of Applied Physics
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