Stability of Bose Einstein condensates of hot magnons in YIG
arXiv:0711.1574 · doi:10.1103/PhysRevLett.100.257202
Abstract
We investigate the stability of the recently discovered room temperature Bose-Einstein condensate (BEC) of magnons in Ytrrium Iron Garnet (YIG) films. We show that magnon-magnon interactions depend strongly on the external field orientation, and that the BEC in current experiments is actually metastable - it only survives because of finite size effects, and because the BEC density is very low. On the other hand a strong field applied perpendicular to the sample plane leads to a repulsive magnon-magnon interaction; we predict that a high-density magnon BEC can then be formed in this perpendicular field geometry.
Submitted to Physical Review Letters
References in corpus (2)
Cited by in corpus (50)
- Spin currents and spin superfluidity
- Critical suppression of spin Seebeck effect by magnetic fields
- Spin Insulatronics
- Magneto-elastic modes and lifetime of magnons in thin yttrium-iron garnet films
- Magnon-polaron transport in magnetic insulators
- Theory of coherence in Bose-Einstein condensation phenomena in a microwave driven interacting magnon gas
- Microscopic spin-wave theory for yttrium-iron garnet films
- Spin Currents and Magnon Dynamics in Insulating Magnets
- Predicted Rectification and Negative Differential Spin Seebeck Effect at Magnetic Interfaces
- Theory of asymmetric and negative differential magnon tunneling under temperature bias: Towards a spin Seebeck diode and transistor
- Rayleigh-Jeans condensation of pumped magnons in thin film ferromagnets
- Wiedemann-Franz Law for Magnon Transport
- Phase Diagram for Magnon Condensate in Yttrium Iron Garnet Film
- Magnon qubit on double Bose-Einstein condensate
- Direct evidence of spatial stability of Bose-Einstein condensate of magnons
- Is spin superfluidity possible in YIG films?
- Domain wall heat conductance in ferromagnetic wires
- The Ginzburg-Landau model of Bose-Einstein condensation of magnons
- How to control Spin-Seebeck current in a metal-quantum dot-magnetic insulator junction
- Macroscopic properties of triplon Bose-Einstein condensates
- Magnonic Casimir Effect in Ferrimagnets
- Bose-Einstein condensation at finite momentum and magnon condensation in thin film ferromagnets
- Parametric pumping and kinetics of magnons in dipolar ferromagnets
- High-field instability of field-induced triplon Bose-Einstein condensate
- Field-dependence of magnon decay in yttrium iron garnet thin films
- Quantum many-body states and Green functions of nonequilibrium electron-magnon systems: Localized spin operators vs. their mapping to Holstein-Primakoff bosons
- Bose-Einstein Condensation of Nonequilibrium Magnons in Confined Systems
- Stabilizing Mechanism for Bose-Einstein Condensation of Interacting Magnons in Ferrimagnets and Ferromagnets
- Tunneling and inversion symmetry in single-molecule magnets: the case of the Mn12 wheel molecule
- Thermal squeezing and nonlinear spectral shift of magnons in antiferromagnetic insulators
- Anisotropy-assisted magnon condensation in ferromagnetic thin films
- Non-Hermitian Casimir effect of magnons
- Fröhlich versus Bose-Einstein Condensation in Pumped Bosonic Systems
- Long-wave magnons in a ferromagnetic film
- Controlling stability of Bose-Einstein condensation of interacting magnons in an antiferromagnet by an external magnetic field
- Dynamics of a Bose-Einstein Condensate of Excited Magnons
- Effect of magnon decays on parametrically pumped magnons
- Formation of new phase inclusions in the system of quasi-equilibrium magnons of high density
- Stability of chiral magnon condensates in collinear antiferromagnetic insulators
- Collisionless kinetic theory for parametrically pumped magnons
- Accumulation of magnetoelastic bosons in yttrium iron garnet: kinetic theory and wave vector resolved Brillouin light scattering
- Entanglement of condensed magnons via momentum-space fragmentation
- Spin-transfer-assisted parametric pumping of magnons in yttrium iron garnet
- Electromagnetic response in dipole superfluids: vortex lattices and singular domain walls
- The magnonic superfluid droplet at room temperature
- Brillouin-Mandelstam Light Scattering Spectroscopy: Applications in Phononics and Spintronics
- Conventional magnon BEC in YIG film
- Statistical Thermodynamics of the Fröhlich-Bose-Einstein Condensation of Magnons out of Equilibrium
- Multiband condensate of magnons in two dimensions
- Direct and alternating magnon spin currents across a junction interface irradiated by linearly polarized laser