تقرير
Superionic phase transition of copper(I) sulfide and its implication for purported superconductivity of LK-99
| العنوان: | Superionic phase transition of copper(I) sulfide and its implication for purported superconductivity of LK-99 |
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| المؤلفون: | Jain, Prashant K. |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity, Condensed Matter - Materials Science |
| الوصف: | Lee, Kim, and coworkers have recently claimed room-temperature and ambient-pressure superconductivity in a copper-doped lead apatite material named LK-99. However, the polycrystalline material synthesized has a significant fraction of copper(I) sulfide. Copper(I) sulfide has a known phase transition at 104 degrees C from an ordered low-temperature phase to a high-temperature superionic phase. As a result of this phase transition, copper(I) sulfide exhibits sharp transitions in electrical resistivity and heat capacity, which are expected to coincide with the temperature-induced transitions reported for LK-99. This implies that LK-99 must be synthesized without any copper(I) sulfide to allow unambiguous validation of the superconducting properties of LK-99. Comment: 6 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1021/acs.jpcc.3c05684 |
| URL الوصول: | http://arxiv.org/abs/2308.05222 |
| رقم الأكسشن: | edsarx.2308.05222 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1021/acs.jpcc.3c05684 |
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