Electronic transport at the nanoscale
Theoretical and computational aspects
(Sprache: Englisch)
The problem of electronic transport in systems comprising only a handful of atoms is one of the most exciting branches of nanoscience. The aim of this book is to address the issue of non-equilibrium transport at the nanoscale. At first, we lay down the...
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The problem of electronic transport in systems comprising only a handful of atoms is one of the most exciting branches of nanoscience. The aim of this book is to address the issue of non-equilibrium transport at the nanoscale. At first, we lay down the theoretical framework based on Keldysh's non-equilibrium Green function formalism. We show how this formalism relates to the Landauer-Buttiker formalism for the linear regime and how the current through a nanoscopic system can be related to a rate equation for which a steady state solution can be found. This formalism can be applied with different choices of Hamiltonian. In this work we choose to work with the Hamiltonian obtained from density functional theory which provides an accurate description of the electronic structure of nanoscopic systems. The combination of NEGFs and DFT results in Smeagol, a state-of-the-art tool for calculating materials-specific electronic transport properties of molecular devices as well as interfaces and junctions. We then show some examples of how Smeagol could be used to study a variety of systems from magnetic point contacts to DNA.
Autoren-Porträt von Alexandre Reily Rocha, Stefano Sanvito
Reily Rocha, AlexandreAlexandre R. Rocha: Ph.D. from Trinty College Dublin, currentlyProfessor at Univ. Federal do ABC, Brazil. Affiliate member ofthe Brazilian Academy of Sciences; Stefano Sanvito: Ph.D. fromLancaster University, UK, Currently Professor at Trinity CollegeDublin, and Deputy director of Centre for Research on AdaptiveNanostructures and Nanodevices.
Bibliographische Angaben
- Autoren: Alexandre Reily Rocha , Stefano Sanvito
- 2010, 212 Seiten, Maße: 22 cm, Kartoniert (TB), Englisch
- Verlag: LAP Lambert Academic Publishing
- ISBN-10: 3838338480
- ISBN-13: 9783838338484
Sprache:
Englisch
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