Université Lyon 1
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  • Unité d'enseignement : Nanomagnetism and spintronics
Nombre de crédits de l'UE : 3
Code APOGEE : PHY2411M
    Responsabilité de l'UE :
NIEHAUS THOMAS
 thomas.niehausuniv-lyon1.fr
04.72.43.15.71
    Type d'enseignement
Nb heures *
Cours Magistraux (CM)
14 h
Travaux Dirigés (TD)
16 h

* Ces horaires sont donnés à titre indicatif.

    Pré-requis :

Quantum Mechanics, Basics of Solid State Physics

    Compétences attestées (transversales, spécifiques) :
Develop knowledge of the origin of magnetism and its applications in technology.
    Programme de l'UE / Thématiques abordées :

The aim of this course is to convey adequate knowledge of magnetism in atoms and solids so that magnetic nanostructures and modern spintronics devices can be understood. Students learn about the different forms of magnetism, their microscopic origin and how magnetism is used and applied in contemporary technology. A key part of the lectures is a presentation by a researcher or a representative of a company working in the field. The Auvergne-Rhône-Alpes region is traditionally strong in the domain of magnetism

 Course outline:

 Introduction

  • Historical introduction
  • Classification of magnetic systems
  • Basics of magnetostatics
  • Magnetism of electrons (orbital and spin moments)
  • Magnetism of localized electrons on the atom

 Experimental techniques

  • Measuring magnetism
  • Magnetic phenomena and simple experiments
  • Sensitive measurements with SQUIDs

 Magnetism in the solid state

  • Pauli paramagnetism
  • Quenching of orbital momentum
  • Crystal fields and magnetocrystalline anisotropy
  • Band magnetism
  • Mean field theory by Weiss
  • Heisenberg Hamiltonian
  • Stoner criterion

 Micromagnetism

  • Domains
  • Domain walls

 Magnetism of nano-objects

  • Zero-dimensional nano-objects: superparamagnetism
  • One-dimensional nano-objects: nanowires
  • Two-dimensional nano-objects: thin magnetic films and multilayers
  • Giant magnetoresistance: principle and realization
  • Tunneling magnetoresistance
  • Magnetic data storage and other applications
  • Principles of storage: analog, magnetic, magneto-optic
  • Storage and retrieval processes

 Spintronics

  • Datta-Das transistor
  • Spin injection
  • Spin-Hall effect and its inverse

 Odds and ends

  • Ferromagnetic liquids
  • Magnetic levitation
    Parcours / Spécialité / Filière / Option utilisant cette UE :
Date de la dernière mise-à-jour : 13/09/2017
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