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28 March 2024
 
  » arxiv » 0904.1278

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Pressure-induced Superconductivity in Crystalline Boron Nanowires
Liling Sun ; Takahiro Matsuoka ; Yasuyuki Tamari ; Katsuya Shimizu ; Jifa Tian ; Yuan Tian ; Chendong Zhang ; Chengmin Shen ; Wei Yi ; Hongjun Gao ; Jianqi Li ; Xiaoli Dong ; Zhongxian Zhao ;
Date 8 Apr 2009
AbstractWe report high-pressure induced superconductivity in boron nanowires (BNWs) with rhombohedral crystal structure. Obviously different from bulk rhombohedral boron, these BNWs show a semiconductor-metal transition at much lower pressure than bulk boron. Also, we found these BNWs become superconductors with Tc=1.5 K at 84 GPa, at the pressure of which bulk boron is still a semiconductor, via in-situ resistance measurements in a diamond anvil cell. With increasing pressure, Tc of the BNWs increases. The occurrence of superconductivity in the BNWs at a pressure as low as 84 GPa probably arises from the size effect.
Source arXiv, 0904.1278
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