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Prerequisites
Language of instruction
Duration
LevelQuantum Transport and Molecular Electronics (B-KUL-H08Q5A)
Cannot be taken as part of an examination contract
N.
Université Joseph Fourier Grenoble I
Aims
This course is intended to be an introductory course accessible for both chemists and Physicists. It will present in an illustrated and accessible fashion the principles of quantum electron transport in molecular and nanoscale devices and offer an overview of this active field of Nanosciences.
Previous knowledge
Quantum mechanics, solid state physics.This is an advance course that need prerequisite learnt during the first year.
Content
This course in taught at Université Joseph Fourier Grenoble.
More information: http://physique-eea.ujf-grenoble.fr/MasterNano/nanotechnology/Nanophysic/Molecular_electronics_and_quantum_transport.html
Course material
Articles and literature
Syllabus
Slides, transparencies, courseware
Is also included in other courses
Activities
3.0 ects. Quantum Transport and Molecular Electronics (B-KUL-H08Q5a)
Content
1. General Introduction 1/3 : The foundation of Nanoelectronics : illustrated historical presentation of new concepts and recent experiments
- Objects : heterostructures, nanocristals, nanotubes and nanowires
- First introduction of concepts : low dimension transport , quantum confinement, Coulomb blockade and quantum dot
2. General Introduction 2/3 : The future of Nanoelectronics : beyond the MOSFET.
- New materials (beyond silicon )
- New architectures and New ideas : Spintronics and Quantum information.
3. General Introduction 3/3 : The Instruments of Nanoelectronics : Fabrication and Measurement techniques :
- Physics : electron microscopies , techniques of nanolithography, scanning probes, cryogenics
- Chemistry : Self assembly, supramolecular chemistry
- Bio-inspired approaches : DNA guided assembly, bioelectronics (neurons/solid state devices interfacing)
4. Introduction to Electron Transport : Concepts and new phenomena
- Hamiltonian description of Electron in a lattice, Bloch waves
- Band structure and Density of states
- Effect of confinement on the density of states,
5. From the bulk 3D to the single molecule. :
- Application to the Benzene molecule and to the carbon nanotubes
- Illustrated presentation of the effect of Quantum confinement : Electronic spectroscopy
6. Semiclassical Transport :
- effect of disorder and geometry , notion of elastic/inelastic mean free path, localization of electrons , Phase coherence and mesoscopic effects
7. Quantum transport
- Ballistic transport and Quantum interferences
- Landauer formula , quantization o f conductance, example of Quantum point contact.
8. Single electronics , introduction to Coulomb blockade and tunneling phenomena
- The single electron box (and its superconducting counterpart)
- The single Electron Transistor and its applications (electrometers, Thermometers)
- Electron pumps and Single electron memories
9. The Quantum dot : an artificial and tunable atom
- Theory of the quantum dot : definition of the addition energy
- Spectroscopy of a quantum dot,
- electron/electron interactions (
- spin effects (Kondo resonance, Zeeman splitting)
10. From Organic Electronics to Single Atom transistors
- Notions of Quantum Chemistry
- Theory of the molecular junction
- strong and weak coupling,
- analogies with the previously introduced concepts (single electron devices and quantum dots)
- Links between chemical structure/functions and electron properties
- diodes, molecular transistors, memories and switches
- Introduction to Molecular Spintronics
Description of learning activities
All lectures are built following the same scenario:
- Position of the problem
- Theoretical description
- Exercises
- Illustrations
