布里渊区
兴奋剂
凝聚态物理
超导电性
材料科学
声子
电子
热传导
电子能带结构
格子(音乐)
导带
电子结构
物理
量子力学
声学
复合材料
作者
Ning Liu,Wenjun Wang,Liwei Guo,Tonghua Peng,Xiaolong Chen
标识
DOI:10.1142/s0217984917501160
摘要
The electronic structure and the lattice dynamics of N-doped 3C–SiC have been studied using the first-principles calculations. Electrons are introduced to the conduction band bottom at the X-point of the Brillouin zone. It is revealed that the acoustical modes and optical modes soften upon N doping. The softened acoustical modes contribute over twice of what the optical modes do to the electron–phonon coupling strength. We predict that the superconductivity will occur with N doping concentration beyond about 3 at.% and the transition temperature can reach 11.36 K upon doping of N at about 5 at.% for 3C–SiC.
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