Magnetization and electric transport properties of single-crystal MgB 2 nanowires

Cen Shawn Wu, Yu Cheng Chang, Weimeng Chen, Chinping Chen, Qingrong Feng

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

High quality single-crystal magnesium diboride (MgB 2) nanowires with lengths exceeding 10μm were successfully synthesized by hybrid physical chemical vapor deposition. The magnetization and electrical transport properties of single-crystal MgB 2 nanowires (NWs) were measured. The superconducting transition temperature of the NWs was 37K, as confirmed by magnetization measurements. The disordered behavior of the nanowires was observed by four-terminal currentvoltage characteristic measurements of an individual NW from T=10 to 300K. The temperature-dependent resistivity curves for seven NWs collapsed into a universal curve described by the variable range hopping model, showing intrinsic nonmetallic transport properties. This implies that the granular superconducting defect states are critical to the superconductivity of the individual MgB 2 NWs.

原文English
文章編號465706
期刊Nanotechnology
23
發行號46
DOIs
出版狀態Published - 2012 十一月 23

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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