迪拉克费米子
物理
螺旋狄拉克费米子
Dirac(视频压缩格式)
双层石墨烯
双层
凝聚态物理
无质量粒子
半金属
石墨烯
费米能级
狄拉克旋量
带隙
量子力学
化学
生物化学
膜
电子
中微子
作者
Yinchang Zhao,Xi Chen,Muhammad Zulfiqar,Jun Ni
出处
期刊:Physics Letters A
日期:2016-01-01
卷期号:380 (3): 475-479
被引量:1
标识
DOI:10.1016/j.physleta.2015.10.049
摘要
Using density-functional calculations we have investigated the features of massless relativistic Dirac-like fermion and node-loop in bilayer BC3 sheet sandwiching a triangular alkaline metal layer. Superposition of single-sheet spectra combined with the alkaline metal doping gives rise to the Dirac-like spectrum and an interesting node-loop on the Fermi surface, which is similar to that in AA-stacked bilayer graphene. Furthermore, the sandwich structures are thermodynamically and kinetically stable due to the presence of strong ionic bonding between alkaline metal layer and BC3 sheets. The newly predicted structures can be taken as good candidates to investigate Dirac-like particles and 2D Dirac semimetal features.
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