用推广的平面波展开法检验平面内极化的电子子带跃迁

把平面波展开包络函数的方法推广到求解8带的哈密顿量，使它同时包括Γ^c₁和Γ^v₁₅．在这种方法里，可以考虑反演不对称性、能带的非抛物性、有效质量不连续性以及自旋轨道耦合等效应的影响．作为应用，计算了两个量子阱结构的子带和光跃迁概率．实验上在这两个结构中观察到了平面内极化的电子子带跃迁．计算表明这种跃迁的概率很小．实验上观察到的平面内极化的电子子带吸收可能有其他的机制关键词：

EXAMINING THE IN PLANE POLARIZED INTERCONDUCTION SUBBAND TRANSITION USING GENERALIZED PLANE WAVE METHOD

The method of the plane-wave expansion of envelope functions,as applied to calculating the subband structures in superlattices,is extended to the 8-band k·p Hamiltonian,in which both Γ^c₁ and Γ^v₁₅ bands are included.In this method,we can easily take into account of the effects of the nonparabolicity,the discontinuity of the effective masses,the spin-orbit splitting and the inversion asymmetry on subbands.Using this method,we have computed the electronic structure and the optical transition probability of two superlattice systems,in which the in-plane polarized interconduction subband transitions were observed.Our results show that the probability of such transitions is very small.It is thus expected that there might be other machanism to be responsible for the experimental results.