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Superconductivity Induced at a Point Contact on the Topological Semimetal Tungsten Carbide

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 نشر من قبل Xingyuan Hou
 تاريخ النشر 2018
  مجال البحث فيزياء
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We report the observation of local superconductivity induced at the point contact formed between a normal metal tip and WC -- a triple point topological semimetal with super hardness. Remarkably, the maximum critical temperature is up to near 12 K but insensitive to the tips magnetism. The lateral dimensions of the superconducting puddles were evaluated and the temperature dependencies of superconducting gap and upper critical field were also obtained. These results put constraints on the explanation of the induced superconductivity and pave a pathway for exploring topological superconductivity.



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