CAJ | 학술논문

文章利用紧束缚模型计算了二维正方、三角、六角格子色散关系。对于正方和三角格子，主要考虑电子在最近邻格点上的跳跃情况。对于六角格子，以石墨烯为例，考虑电子只在最近邻格点上跳跃以及同时考虑电子在最近邻和次近邻格点上跳跃两种情况。对于以上3种格子的色散关系，利用Matlab软件进行图形化，并用Fortran软件编程计算相应的态密度，计算结果对理解不同晶格的电学性质提供理论基础。
문장이용긴속박모형계산료이유정방、삼각、륙각격자색산관계。대우정방화삼각격자，주요고필전자재최근린격점상적도약정황。대우륙각격자，이석묵희위례，고필전자지재최근린격점상도약이급동시고필전자재최근린화차근린격점상도약량충정황。대우이상3충격자적색산관계，이용Matlab연건진행도형화，병용Fortran연건편정계산상응적태밀도，계산결과대리해불동정격적전학성질제공이론기출。
In this paper,we calculated the dispersion relations of two-dimensional square,triangular and hex?agonal lattice by tight binding model.For the square and triangular lattice,we mainly considered the electrons hops between the nearest neighbors,while for the hexagonal lattice,taking graphene as example,we consid?ered the electrons not only hops between the nearest neighbors but also between the next nearest neighbors. For the dispersion relations of above three kinds of lattices,we use Matlab software to draw the figures.Be?sides,the corresponding density of states (DOS) was calculated by Fortran software.These results provide a theoretical basis for understanding the electronic properties of different lattices.