Reflection above potential steps
Reflection above potential steps
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反思以上潜在步骤
DOI：
10.1088/0305-4470/32/15/005
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Z. Ahmed
中科院分区：
文献类型：
--
作者：
Z. Ahmed
给出了光滑和复合半无限势的阶上量子反射概率的不同行为。对于光滑的半无限势（阶跃），反射率通常是能量的单调递减函数。但是复合的两段式（不可微的，例如，在x = 0处）势步导致反射率出现一个参数相关的明显的单一最小值。给出了支持这种量子反射行为的三个解析可解模型和其他几个复合半无限（阶跃）势模型。
Disparate behaviour of above-the-step quantal reflection probability for smooth and composite semi-infinite potentials is shown. For a smooth semi-infinite potential (step) the reflectivity is usually a monotonically decreasing function of energy. But the composite two-piece (non-differentiable, e.g., at x = 0) potential step gives rise to a parameter-dependent pronounced single minimum in the reflectivity. Three analytically solvable and several other models of composite semi-infinite (step) potentials are shown supporting such a behaviour of the quantal reflection.