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Simulation Approaches for Nano – Scale Semiconductor Devices
| Content Provider | Semantic Scholar |
|---|---|
| Author | Iannaccone, Giuseppe Schenk, Andreas Geel, Frank Bufler, F. M. Pfeiffer, Michael Höhr, Timm Brugger, S. Odermatt, Stefan |
| Copyright Year | 2004 |
| Abstract | Topic of this dissertation are the development and implementation of a three–dimensional simulation environment for semiconductor nanoelectronics devices, that are dominated by quantum effects, and the modelling of the properties of various candidate structures for future ultra–large scale integrated circuits. In this context, Coulomb blockade in the presence of strong quantum confinement, quantum–ballistic transport and the effect of atomistic doping in aggressively scaled semiconductor devices have been studied. The simulation framework presented in this work extends the simnad quantum mechanics simulator developed at the Integrated Systems Laboratory in a previous project and couples it to the standard device simulator dessis–ise. Basis of the simulation model is an effective mass formulation of density functional theory in local density approximation. In its generalisation to finite temperatures it may be used for the computation of the quantum mechanically correct charge distribution inside the device. Additionally, in conjunction with Bardeen’s transfer Hamiltonian method, it may be used to compute tunnelling currents between classically insulated regions (channels, quantum dot) of the device. Doing so requires knowledge of the statistical mechanics of the quantum dot. To make the necessary phase space averages tractable, a Monte–Carlo approach is used. On the classically conducting regions of the device the drift–diffusion model may be used for current computation. Coupling the device simulator dessis–ise with the simnad quantum mechanics simulator results in a simulation tool capable of modelling devices that feature both classical dissipative currents and 3D quantum effects. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.iis.ee.ethz.ch/~schenk/theses/heinz.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Behavior Cobham's thesis Computation (action) Density functional theory Doping (semiconductor) Doping in Sports Functional theories of grammar GNU nano Hamiltonian (quantum mechanics) Integrated circuit Local-density approximation Molecular dynamics Monte Carlo method Potential well Quantum dot Quantum mechanics Semiconductor device modeling Simulation Xilinx ISE |
| Content Type | Text |
| Resource Type | Article |
