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Nanoelectronic Device Applications Handbook by Krzysztof Iniewski, James E. Morris

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68

Atomic-Scale Modeling of Nanoscale Devices

Anders Blom and Kurt Stokbro

CONTENTS

68.1  Introduction

68.2  Electrical Currents on the Nanoscale

68.3  Atomic-Scale Device Structures

68.4  Quantum-Mechanical Device Modeling

68.4.1   Basic Ingredients

68.4.2   Electronic Structure Methods for Atomic-Scale Device Modeling

68.4.3  Electrostatics and Boundary Conditions

68.5  Summary and Outlook.

References

68.1  INTRODUCTION

Even though the active components of semiconductor devices have been shrunk down radically over the past decade, to the point where certain feature sizes are in the range of 30–40 nm, the motion and behavior of electrons are still reasonably well described by semiclassical models—Ohm’s law coupled with macroscopic electrostatic ...

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