Novel Bismuth Nanotubes
SU Chang-Rong1 , LI Jia-Ming1,2
1 Department of Physics, Center for Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084
2 Institute of Physics, Chinese Academy of Sciences, Beijing 100080
Novel Bismuth Nanotubes
SU Chang-Rong1 ;LI Jia-Ming1,2
1 Department of Physics, Center for Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084
2 Institute of Physics, Chinese Academy of Sciences, Beijing 100080
关键词 ：
31.15.Ar ,
61.46.+w ,
73.22.-f ,
81.07.De
Abstract ： Theoretical investigations show that bismuth nanotubes are semiconductors for all diameters. For small diameter bismuth nanotubes, the band structures and bandgaps vary strongly with the strong hybridization effect. When the diameters are larger than 18Å, the bandgaps of Bi (n,n) and (n,0) nanotubes approach to 0.63 eV, corresponding to the bandgap of bismuth sheet at the Γ point. Thus, bismuth nanotubes are expected to be a potential semiconductor nanomaterial in future nanoelectronics.
Key words ：
31.15.Ar
61.46.+w
73.22.-f
81.07.De
出版日期: 2002-12-01
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2002, Vol. 19 
