Renormalization Group Theory Impact on Experimental Magnetism /

• Main Authors: Kb̲ler, Ulrich. (Author), Hoser, Andreas. (Author)
• Corporate Author: SpringerLink (Online service)
• Format: Electronic
• Language: English
• Published: Berlin, Heidelberg : Springer Berlin Heidelberg, 2010.
• Series: Springer Series in Materials Science, 127
• Subjects: Physics.; Magnetism.; Magnetism, Magnetic Materials.; Theoretical, Mathematical and Computational Physics.
• Online Access: https://ezaccess.library.uitm.edu.my/login?url=http://dx.doi.org/10.1007/978-3-642-02487-0

Spin wave theory of magnetism and BCS theory of superconductivity are typical theories of the time before renormalization group (RG) theory. The two theories consider atomistic interactions only and ignore the energy degrees of freedom of the continuous (infinite) solid. Since the pioneering work of...

Table of Contents:

• 1. Introduction
• 2. History of conventional spin wave theory
• 3. Basic issues of Renormalization Group (RG) theory
• 4. Universality
• 5. Microscopic processes
• 6. Non-relevant magnons
• 7. Crossover phenomena
• 8. Metastability of universality classes
• 9. Relevant and non relevant interactions
• 10. Temperature dependence of the magnon excitation spectra
• 11. Magnetic heat capacity
• 12. Experimental verification of GSW bosons
• 13. Magnets with and without magnon gap (Goldstone mode)
• 14. Microscopic details: spin structure, site disorder, two order parameters
• 15. The critical magnetic behaviour
• 16. Thermal lattice expansion and magnetostriction
• 17. The total energy content
• 18. Superconductivity
• 19. Conclusions.