【摘要】 利用传输矩阵方法研究了由电压调制形成的三元周期序列石墨烯超晶格的透射率禁带。作为入射电子能量函数的透射率会形成多个透射禁带。电子隧穿经过石墨烯超晶格形成的透射率禁带,可以由石墨烯超晶格的周期数、电子的入射角、势垒的高度和宽度来调节。石墨烯超晶格的这些性质在设计石墨烯多通道电子滤波器等电子器件中有潜在的应用价值。更多还原

【Abstract】 The transmission probability in graphene superlattices with triple periodic potential patterns induced by electric field was investigated by the transfer matrix method.It is demonstrated that the transmission probability as a function of incidence energy has more than one gap.The transmission gaps of electrons tunneling through a graphene superlattices can be modulated by changing the period number,incidence angle of electrons,height and width of the potential barrier.The transport properties in graphene superlattices with periodic potential patterns may lead to possible application in designing multi-channel electron wave filter.更多还原