Non-Equilibrium Green's Function Method for Nanoscale Device Simulation

Autor: Mahdi Pourfath

Język:

Oprawa: Miękka

Wydawca: Springer Verlag GmbH

Dostępność: Dostępna u dostawcy

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For modeling the transport of carriers in nanoscale devices, a Green-function formalism is the most...

Informacje o książce

Autor

Mahdi Pourfath

Język

Angielski

Oprawa

Książka - Miękka

Data wydania

2016

strony

256

EAN

9783709148389

ISBN

3709148383

Enbook ID

13791777

Wydawca

Springer Verlag GmbH

Waga

4219

Wymiary

155 x 235 x 16

Pełny opis

For modeling the transport of carriers in nanoscale devices, a Green-function formalism is the most accurate approach. Due to the complexity of the formalism, one should have a deep understanding of the underlying principles and use smart approximations and numerical methods for solving the kinetic equations at a reasonable computational time. In this book the required concepts from quantum and statistical mechanics and numerical methods for calculating Green functions are presented. The Green function is studied in detail for systems both under equilibrium and under nonequilibrium conditions. Because the formalism enables rigorous modeling of different scattering mechanisms in terms of self-energies, but an exact evaluation of self-energies for realistic systems is not possible, their approximation and inclusion in the quantum kinetic equations of the Green functions are elaborated. All the elements of the kinetic equations, which are the device Hamiltonian, contact self-energies and scattering self-energies, are examined and efficient methods for their evaluation are explained. Finally, the application of these methods to study novel electronic devices such as nanotubes, graphene, Si-nanowires and low-dimensional thermoelectric devices and photodetectors are discussed.

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