Spin-wave theory and its applications to neutron scattering and THz spectroscopy /

Two of the most powerful tools used to study magnetic materials are inelastic neutron scattering and THz spectroscopy. Because the measured spectra provide a dynamical fingerprint of a magnetic material, those tools enable scientists to unravel the structure of complex magnetic states and to determi...

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Detalles Bibliográficos
Clasificación:Libro Electrónico
Autores principales: Fishman, Randy S. (Autor), Fernandez-Baca, J. A. (Jaime A.) (Autor), Rõõm, Toomas (Autor)
Formato: Electrónico eBook
Idioma:Inglés
Publicado: San Rafael [California] (40 Oak Drive, San Rafael, CA, 94903, USA) : Morgan & Claypool Publishers, [2018]
Colección:IOP (Series). Release 5.
IOP concise physics.
Temas:
Spin waves.
Microwave spectroscopy.
Neutrons > Scattering.
Particle & high-energy physics.
SCIENCE / Energy.
Acceso en línea:Texto completo
Tabla de Contenidos:
  • 1. Introduction
  • 2. Inelastic neutron scattering
  • 2.1. Introduction
  • 2.2. Neutron scattering basics
  • 2.3. Some practical considerations
  • 2.4. Instruments for INS
  • 2.5. Neutron scattering at large user facilities
  • 2.6. Exercises
  • 3. THz spectroscopy
  • 3.1. Introduction
  • 3.2. THz spectroscopy in high magnetic fields
  • 3.3. Acquisition and analysis of single-crystal SW spectra
  • 3.4. Selection rules
  • 3.5. Summary
  • 3.6. Exercises
  • 4. Spin-wave theory
  • 4.1. Introduction
  • 4.2. SW formalism
  • 4.3. Spin-spin correlation function and INS
  • 4.4. THz spectroscopy
  • 4.5. SW amplitudes
  • 4.6. General considerations
  • 4.7. Appendix 4.A : symmetry and matrices
  • 4.8. Appendix 4.B : classical check
  • 4.9. Appendix 4.C : shortcuts
  • 4.10. Appendix 4.D : orthogonal and hexagonal notations
  • 4.11. Appendix 4.E : spin susceptibility
  • 4.12. Exercises
  • 5. Model collinear magnets
  • 5.1. Introduction
  • 5.2. A FM in a magnetic field
  • 5.3. A FM chain with alternating exchange interactions
  • 5.4. A FM on a honeycomb lattice
  • 5.5. An AF in a magnetic field
  • 5.6. Powder spectra
  • 5.7. Exercises
  • 6. Model non-collinear magnets
  • 6.1. Introduction
  • 6.2. An AF chain with alternating DM interactions
  • 6.3. A helix or cycloid produced by CE
  • 6.4. A cycloid produced by DM interactions
  • 6.5. Comparison of CE and DM cycloids
  • 6.6. Incommensurate cycloids in 2D or 3D
  • 6.7. A helix produced by GF on a TLA
  • 6.8. The inverse problem
  • 6.9. Exercises
  • 7. Inelastic neutron-scattering case studies
  • 7.1. Introduction
  • 7.2. Amorphous FMs
  • 7.3. An easy-axis AF
  • 7.4. A multiferroic metal-organic framework
  • 7.5. Spin states of a TLA
  • 7.6. Summary
  • 8. THz spectroscopy case studies
  • 8.1. Introduction
  • 8.2. A cycloid produced by DM interactions
  • 8.3. An AF with strong easy-plane anisotropy
  • 8.4. Prospects for the future
  • 9. Conclusion.

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