Hüser, Julian: Kinetic theory of magnon Bose-Einstein condensation. 2016
Inhalt
- Abstract | Zusammenfassung
- Introduction
- Theoretical Model
- Hamiltonian of the Magnetic System
- Spectrum of Non-Interacting Magnons
- Magnon-Magnon Interactions
- Magnon-Phonon Interactions
- Parallel Pumping of Magnons
- Time Evolution of the Magnon Gas: Boltzmann Equation
- Properties of Magnon Interactions
- Magnon Relaxation Rates
- Kasuya-LeCraw Experiment
- Four-Magnon Process
- Three-Magnon Process
- Magnon-Phonon Coupling: Cherenkov Process
- Magnon Equilibration
- Concluding Remarks
- Bose-Einstein Condensation of Magnons
- Dynamics of Pumped Magnons
- Bose-Einstein Condensation under Continuous Pumping
- Phonon-Mediated Bose-Einstein Condensation
- Concluding Remarks
- Conclusions
- Appendix
- Magnon Coefficients
- Dipole Sums
- Bogoliubov Transformation
- Kinetic Equations in Energy Space
- Evaluation of Integrals in the Kinetic Equations
- The t-Matrix Approach
- Four-Magnon Relaxation Rate of the Uniform Mode
- Integration of the Delta Function over Solid Angles
- Bibliography