Interband magnon drag in ferrimagnetic insulators
arXiv:2205.03058 · doi:10.1103/PhysRevB.105.174303
Abstract
We propose a new drag phenomenon, an interband magnon drag, and report on interaction effects and multiband effects in magnon transport of ferrimagnetic insulators. We study a spin-Seebeck coefficient , a magnon conductivity , and a magnon thermal conductivity of interacting magnons for a minimal model of ferrimagnetic insulators using a expansion of the Holstein-Primakoff method, the linear-response theory, and a method of Green's functions. We show that the interband magnon drag enhances and reduces , whereas its total effects on are small. This drag results from the interband momentum transfer induced by the magnon-magnon interactions. We also show that the higher-energy band magnons contribute to , , and even for temperatures smaller than the energy difference between the two bands.
arXiv comment14 pages, 4 figures, 1 table; published version
References in corpus (39)
- Spin Caloritronics
- Spin Seebeck insulator
- Spin Hall Magnetoresistance Induced by a Non-Equilibrium Proximity Effect
- Long distance transport of magnon spin information in a magnetic insulator at room temperature
- Antiferromagnetic spin Seebeck Effect
- Electronic structure of normal and inverse spinel ferrites from first principles
- Magnon spin transport driven by the magnon chemical potential in a magnetic insulator
- Thermal generation of spin current in an antiferromagnet
- Observation of the spin Peltier effect
- Observation of spin Coulomb drag in a two-dimensional electron gas
- Coulomb drag between disordered two-dimensional electron gas layers
- Magnon Polarons in the Spin Seebeck Effect
- Magnon Mediated Electric Current Drag Across a Ferromagnetic Insulator Layer
- Thermal spin dynamics of yttrium iron garnet
- Gigantic enhancement of spin Seebeck effect by phonon drag
- Magnon-phonon interactions in magnetic insulators
- Spin Seebeck effect in antiferromagnets and compensated ferrimagnets
- Observation of magnon-mediated current drag in Pt/yttrium iron garnet/Pt(Ta) trilayers
- Magnon-drag thermopile
- Temperature dependence of the magnon spin diffusion length and magnon spin conductivity in the magnetic insulator yttrium iron garnet
- First-Principles Study of Exchange Interactions of Yttrium Iron Garnet
- Spin Drag and Spin-Charge Separation in Cold Fermi Gases
- Geometric photon-drag effect and nonlinear shift current in centrosymmetric crystals
- General Formula for the Thermoelectric Transport Phenomena based on the Fermi Liquid Theory: Thermopower, Nernst Coefficient, and Thermal Conductivity
- Wiedemann-Franz Law for Magnon Transport
- Spin-transfer mechanism for magnon-drag thermopower
- Spin drag in an ultracold Fermi gas on the verge of a ferromagnetic instability
- Spin drag in noncondensed Bose gases
- Transport in multiband systems with hot spots on the Fermi surface: Forward-scattering corrections
- Stabilizing Mechanism for Bose-Einstein Condensation of Interacting Magnons in Ferrimagnets and Ferromagnets
- Energy drag in particle-hole symmetric systems as a quantum quench
- Weak localization of magnons in a disordered two-dimensional antiferromagnet
- Fermi surface versus Fermi sea contributions to intrinsic anomalous and spin Hall effects of multiorbital metals in the presence of Coulomb interaction and spin-Coulomb drag
- Nonlocal Drag of Magnons in a Ferromagnetic Bilayer
- Controlling stability of Bose-Einstein condensation of interacting magnons in an antiferromagnet by an external magnetic field
- Inplane anisotropy of longitudinal thermal conductivities and weak localization of magnons in a disordered spiral magnet
- Microscopic theory on charge transports of a correlated multiorbital system
- Effects of magnon-magnon interactions in a noncollinear magnet induced by combination of a symmetric and an antisymmetric exchange interaction
- Mechanism for a Chemical Potential of Nonequilibrium Magnons in Parametric Parallel Pumping