Computations of Coupled Electronic States in Quantum Dot/Wetting Layer Cylindrical Structures

Melnik, R.V.N. and Zotsenko, K.N.

Lecture Notes in Computer Science, Springer, LNCS-2659, Eds. P.M.A. Sloot et al, Part III, ICCS, Melbourne, 343--349, 2003


There exist several techniques allowing to confine the motion of an electron from all three dimensions. The resulting structures, known as quantum dots, promise new opportunities in optoelectronics, and a better understanding of such structures requires incorporating new effects into existing models which inevitably leads to the necessity of using. efficient computational tools. In this paper we analyse computationally the electronic states in quantum dots of cylindrical shape taking into account the influence of the wetting layer. Coupling effects between quantum dot and wetting layer electronic states are demonstrated with numerical examples.

Key words: quantum dots; coupled effects; eigenvalue problems in computational nanoelectronics; low dimensional semiconductor nanostructures; bandstructures; effective mass theories; eigenvalue PDE problems; optoelectronics applications; finite element methods; quantum confinement.

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