摘要
假设超晶格"折沟道"对粒子的作用等效为形状相似的周期调制;利用Lindhard展开势,并在小振幅近似下,将面沟道粒子的运动行为化为了具有硬特性的弹簧振子。利用多重尺度法分析了共振线附近的粒子运动行为,讨论了系统的主共振、子共振和超共振。计算了超晶格"折沟道"临界斜率与系统参数之间的关系,为研究超晶格光磁电效应提供了理论分析。
It is assumed that a periodic modulation is equivalent to the deflected channel of the superlattice.In the small amplitude approximation the particle motion equation has been reduced to the Duffing equation with a hard-spring properties by using Lindhard expanded potential.The main resonance,the sub-harmonic resonance and the super-harmonic resonance have been analysed by the multi-scale technique.The critical parameter of the deflected channelling has been calculated,the results provided a theory analyse for the photo-magneto-electric effects of the superlattice.
出处
《原子核物理评论》
CAS
CSCD
北大核心
2007年第3期238-242,共5页
Nuclear Physics Review
