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Diamagnetism

  • Wolfgang NoltingEmail author
  • Anupuru Ramakanth
Chapter

Abstract

Diamagnetism is a property displayed by all materials and is explained semiclassically as an induction effect (χ < 0). With the help of Bohr–van Leeuwen theorem, it is possible, however, to prove that magnetism in any form, that means, including diamagnetism, is a pure quantum mechanical phenomenon. There are qualitative differences between the diamagnetism of insulators and metals. The so-called Larmor diamagnetism of the insulators is a result of the reaction of a completely filled electronic shell to an external magnetic field. The Landau diamagnetism of the conduction electrons of a metallic solid is conceptually more difficult. Its susceptibility consists of three parts, the first one being a diamagnetic component (χLandau < 0) which is ascribed to the orbital motion of the electrons, the second one is a paramagnetic component (χPauli = 0) which is a result of the coupling of the field to the spin of the electron and the third is an oscillatory component which changes sign periodically as a function of the field. The last one leads to the de Haas–van Alphen effect.

Keywords

Landau Level Orbital Motion Fermi Function Canonical Partition Function Paramagnetic Component 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  1. 1.Humboldt-Universität zu Berlin, Institut für PhysikBerlinGermany
  2. 2.Department of PhysicsKakatiya UniversityWarangalIndia

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