04538nam 2200589 a 450 991083070310332120180613000628.03-527-67053-X1-299-15720-33-527-67056-43-527-67055-6(CKB)2670000000328196(EBL)1120864(OCoLC)827207484(SSID)ssj0000859774(PQKBManifestationID)11440985(PQKBTitleCode)TC0000859774(PQKBWorkID)10883532(PQKB)11209172(MiAaPQ)EBC1120864(PPN)170160831(EXLCZ)99267000000032819620130225d2013 uy 0engur|n|---|||||txtccrNonequilibrium magnons[electronic resource] theory, experiment, and applications /Vladimir L. SafonovWeinheim Wiley-VCH20131 online resource (206 p.)Description based upon print version of record.3-527-41117-8 Includes bibliographical references and index.Nonequilibrium Magnons: Theory, Experiment, and Applications; Contents; Preface; 1 Harmonic Oscillators and the Universal Language of Science; 1.1 Harmonic Oscillator; 1.1.1 Complex Canonical Variables; 1.2 Classical Rotation; 1.2.1 Classical Spin and Magnetic Resonance; 1.3 Collective Variables and Harmonic Oscillators in k-space; 1.3.1 Chain of Masses and Springs; 1.3.2 Chain of Magnetic Particles; 1.4 Discussion; 2 Magnons in Ferromagnets and Antiferromagnets; 2.1 Phenomenological Description; 2.1.1 Magnons in a Ferromagnet; 2.1.1.1 Holstein-Primakoff Transformation2.1.1.2 The Spectrum of Magnons2.2 Microscopic Modeling; 2.2.1 Magnons in a Two-Sublattice Antiferromagnet; 2.2.1.1 Hamiltonian; 2.2.1.2 Spectrum of Magnons; 2.2.2 Magnon-Magnon Interactions; 2.3 Nuclear Magnons; 2.4 Magnetoelastic Waves, Quasi Phonons; 2.5 Discussion; 3 Relaxation of Magnons; 3.1 Master Equation; 3.2 Relaxation of Bose Quasi Particles; 3.2.1 Relaxation Process of Harmonic Oscillators; 3.2.2 Magnon-Electron Scattering; 3.3 Relaxation via an Intermediate Damped Dynamic System; 3.4 Ferromagnetic Resonance Linewidth; 3.5 Magnons and Macroscopic Dynamic Equation3.5.1 Linearized Landau-Lifshitz Equation3.6 Relaxation of Coupled Oscillations; 3.6.1 Example 1: Nuclear Magnons; 3.6.2 Example 2: Magnetoelastic Oscillations; 3.7 Discussion; 4 Microwave Pumping of Magnons; 4.1 Linear Theory; 4.1.1 Ferromagnetic Resonance; 4.1.2 Threshold of Parametric Resonance; 4.2 Parametric Resonance in a Resonator Cavity; 4.3 Nonlinear SR Theory; 4.4 Experimental Techniques; 4.5 Experimental Results; 4.5.1 Equivalent Circuit; 4.5.2 SR Theory and Experiment; 4.5.2.1 Modulation Response; 4.6 Discussion; 5 Thermodynamic Description of Strongly Excited Magnon System6.2 Quasi Equilibrium Magnons6.2.1 Ideal Gas of Quasi Equilibrium Magnons; 6.2.2 Example: Isotropic Spectrum; 6.2.3 Kinetic Equations; 6.2.3.1 The Case of Teff = T; 6.2.4 Magnon System with Bose Condensate; 6.2.5 Magnetodipole Emission of Condensate; 6.3 Fröhlich Coherence; 6.4 Discussion; 7 Magnons in an Ultrathin Film; 7.1 Model; 7.1.1 Magnetic Energy; 7.2 Magnons; 7.2.1 Magnon Interactions; 7.2.2 Effective Four-Magnon Interactions; 7.3 Example; 7.4 Discussion; 8 Collective Magnetic Dynamics in Nanoparticles; 8.1 Long-Lived States in a Cluster of Coupled Nuclear Spins; 8.2 Electronic Spins8.3 Spin-Echo Logic OperationsThis much-needed book addresses the concepts, models, experiments and applications of magnons and spin wave in magnetic devices. It fills the gap in the current literature by providing the theoretical and technological framework needed to develop innovative magnetic devices, such as recording devices and sensors. Starting with a historical review of developments in the magnon concept, and including original experimental results, the author presents methods of magnon excitation, and several basic models to describe magnon gas. He includes experiments on Bose-Einstein condensation ofMagnonsMagnons.530.1595530.411Safonov Vladimir L1640808MiAaPQMiAaPQMiAaPQBOOK9910830703103321Nonequilibrium magnons3984526UNINA