BULLETIN of the

POLISH ACADEMY of SCIENCES

TECHNICAL SCIENCES

BULLETIN of the POLISH ACADEMY of SCIENCES: TECHNICAL SCIENCES
Volume 55, Issue 2, June 2007

Micro and Nano-scale mechanics

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pp 245 - 249

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3D self-consistent solution of Poisson and Schrödinger equations for electrostatically formed quantum dot

E. MACHOWSKA-PODSIADLO, M. MACZKA and M. BUGAJSKI
In this work we discuss 3D selfconsistent solution of Poisson and Schrödinger equations for electrostatically formed quantum dot. 3D simulations give detailed insight into the energy spectrum of the device and allow us to find values of respective voltages ensuring given number of electrons in the dot. We performed calculations for fully 3D potential and apart from that calculations for the same potential separated into two independent parts, i.e. regarding to the plane of 2DEG and to the direction perpendicular to the meant plane. We found that calculations done for the two independent parts of the potential give good information about quantum dot properties and they are much faster compared to fully 3D simulations.
Key words:

quantum dot, Poisson equation, Schrödinger equation, Hartree approximation, electron-electron interaction, zerodimensional electron gas, inverted heterostructure, ISIS


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