Photoemission calculations have been performed using the Kronig-Penney model and including photon field variation with the help of a simple model, where the dielectric response in the surface region is a local function linearly interpolated between the vacuum value and the experimentally measured bulk ...
数,可使KronigPenney能带模型分析计算的工作量大为减少。讨论了KronigPenney模型衍 生的相关概念和现象。该方法具有编程简单,使用方便、实用性强等特点。 关键词:KronigPenney模型;能带;半导体;薛定谔方程;MATLAB 中图分类号:O471 文献标识码:A AnalysisandcomputationofKronigPenneyenergy bandmodelwithMATLAB WANGYifeng,...
(x) of an electron shown in the illustration with an infinite sequence of potential wells of depth -V0and widtha, arranged with a spacingb. The width and the curvatures of the allowed bands increase with energy. The Kronig-Penney model has been extended to include the effects of impurity ...
Kronig-Penney modelthree layer systemsDirac delta-functionspotential strengthtransmission coefficientscattering energiesWe investigate a sandwich of three layer systems with Dirac 未-functions in the Kronig-Penney model. The inner system of N =5 atomic layers is enclosed by the two outer systems with ...
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Kronig-Penney modelGreen functiondensity-of-stateselectronic structureA Green function formalism for density-of-states calculations is applied to investigate the electronic structure of a semi-infinite superlattice in contact with a substrate. Density-of-states and space-charge distributions are computed ...
[2]is the best guide to this f i eld for readers). Most fundamental case is the one-dimensionalSchrödinger operator with periodic point interactions, called the Kronig–Penney model(see Kronig–Penney [10]), given byH = −d 2dx 2+ V∞Xj=−∞δ(x − j) on L 2 (R), (1)...
The Kronig-Penney model on a class of one-dimensional quasiperiodic lattices is studied. A unified trace map and the Landauer resistance are obtained. Numerical calculations of the energy spectra of such lattices reveal interesting features.
We argue that this does not necessarily imply next-nearest-neighbour tunneling; this assertion is demonstrated by deriving the transition amplitudes for a two-state effective model that describes a double-well potential, which is a simplified precursor to the problem of a periodic array of potential...
The relativistic Kronig-Penney model is extended to a wide class of point interactions introduced in the nonrelativisfic case by Paul Chernoff and the author. A generalized Kronig-Penney relation, which converges to the standard Kronig-Penney relation in the nonrelativistic limit, is shown to ...