Lecture content, slides, additional information

I. Introduction

 

II. Short review of magnetism in free atoms (slides) (lecture notes)

  • Hamiltonian of atoms in an external magnetic field
  • Perturbation theory for treating effects of B-field
  • Larmor diamagnetism
  • Paramagnetism of free atoms, Curie law
  • Van Vleck paramagnetism
  • Spin-orbit coupling
  • Hund's rules
  • Hyperfine interaction

 

III. Cooperative phenomena (slides) (lecture notes)

 

IV. Micro- and Nanomagnets (slides) (lecture notes)

  • Magnetic domain: stray field, anisotropy
  • Domain walls: width; neel vs. Bloch
  • Visualisation of magnetis domains: magnetic force microscopy
  • Magnetisation curve of a ferromagnet: hysteresis
  • Single domain magnets
  • Superparamagnetism
  • MEG; SQUID-based dignostics
  • Magnetic hyperthermia
  • "Nanomedicine"
  • Link: Commercial nanomagnet-based anti-cancer therapy
  • Link: Magnetic hyperthermia @ KIP

 

V. Magnetism in metals (slidess V+VI) (lecture notes V+VI)

 

VI: Metals in external magnetic field

  • Landau levels
  • Self studies: Landau diamagnetism
  • Link: Nobel prize 1962 - Lev Landau
  • De Haas-van Alphen effect
  • Shubnikov-de Haas effect
  • Determining Fermi surface by quantum oscillations

 

VII. Magnetoresistive Effects and Spinelectronic Devices (slides) (lecture notes)

 

VIII. Atoms in crystalline environment (slides) (lecture notes)

 

IX Electronic correlation, Hubbard model, Mott insulators (slides) (lecture notes)

Advanced further reading: M. Imada, A. Fujimori, Y. Tokura: Metal-Insulator transitions, Rev. Mod. Phys. 70, 1039–1263 (1998)

  • General idea of the Mott transition
  • Bandwidth controlled Mott transition
  • The example of NiO
  • Hubbard model
  • One-band Hubbard model
  • Which electrons are we talking about?
  • Hubbard subbands
  • The example of RNiO3
  • Mott-Hubbard vs. charge transfer insulators
  • Bandwidth-controlled metal-insulator transition
  • Zaanen-Sawatzki-Allen Schema
  • Link: Zaanen-Sawatzki-Allen, PRL 1985
  • Link: Experimental Zaanen-Sawatki-Allen schema: Boquet1996

 

X Exchange Interactions (slides) (lecture notes)

 

Magnetism II

  • Kondo physics
  • Molecular magnetism
  • Magnetism and charge stripes in high-Tc cuprates
  • Magnetism in pnictide superconductors
  • Quantum Hall effect
 
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