Temperature dependent relaxation of dipole-exchange magnons in yttrium iron garnet films

Abstract

Low energy consumption enabled by charge-free information transport, which is free from ohmic heating, and the ability to process phase-encoded data by nanometer-sized interference devices at GHz and THz frequencies are just a few benefits of spin-wave-based technologies. Moreover, when approaching cryogenic temperatures, quantum phenomena in spin-wave systems pave the path towards quantum information processing. In view of these applications, the lifetime of magnons$-$spin-wave quanta$-$is of high relevance for the fields of magnonics, magnon spintronics and quantum computing. Here, the relaxation behavior of parametrically excited magnons having wavenumbers from zero up to $6\cdot 10^5{\mathrm{rad}\mathrm{cm}}^{-1}$ was experimentally investigated in the temperature range from 20 K to 340 K in single crystal yttrium iron garnet (YIG) films epitaxially grown on gallium gadolinium garnet (GGG) substrates as well as in a bulk YIG crystal$-$the magnonic materials featuring the lowest magnetic damping known so far. As opposed to the bulk YIG crystal in YIG films we have found a significant increase in the magnon relaxation rate below 150 K$-$up to 10.5 times the reference value at 340 K$-$in the entire range of probed wavenumbers. This increase is associated with rare-earth impurities contaminating the YIG samples with a slight contribution caused by coupling of spin waves to the spin system of the paramagnetic GGG substrate at the lowest temperatures.

References in corpus (27)

• Spin Caloritronics
• Hybridizing ferromagnetic magnons and microwave photons in the quantum limit
• Interface-Induced Phenomena in Magnetism
• High cooperativity in coupled microwave resonator ferrimagnetic insulator hybrids
• Long distance transport of magnon spin information in a magnetic insulator at room temperature
• Roadmap for Emerging Materials for Spintronic Device Applications
• Quantum magnonics: magnon meets superconducting qubit
• Supercurrent in a room temperature Bose-Einstein magnon condensate
• Thermal spin dynamics of yttrium iron garnet
• Electronic control of the spin-wave damping in a magnetic insulator
• Sub-micrometer yttrium iron garnet LPE films with low ferromagnetic resonance losses
• Hybrid nanodiamond-YIG systems for efficient quantum information processing and nanoscale sensing
• Spin caloritronic nano-oscillator
• Increased low-temperature damping in yttrium iron garnet thin films
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• Two-Fluid Theory for Spin Superfluidity in Magnetic Insulators
• Josephson and Persistent Spin Currents in Bose-Einstein Condensates of Magnons
• Brillouin light scattering spectroscopy of parametrically excited dipole-exchange magnons
• Bottleneck accumulation of hybrid magneto-elastic bosons
• Gilbert damping of magnetostatic modes in a yttrium iron garnet sphere
• Spin superfluidity and long-range transport in thin-film ferromagnets
• Temporal behavior of the inverse spin Hall voltage in a magnetic insulator-nonmagnetic metal structure
• Spin-wave propagation and transformation in a thermal gradient
• Field-induced transition from parallel to perpendicular parametric pumping for a microstrip transducer
• Spin Seebeck effect at microwave frequencies
• Measurement of a Magnonic Crystal at Millikelvin Temperatures
• Damping of parametrically excited magnons in the presence of the longitudinal spin Seebeck effect

Cited by in corpus (24)

• Roadmap on Spin-Wave Computing
• Hybrid magnonics: physics, circuits and applications for coherent information processing
• Microwave magnon damping in YIG films at millikelvin temperatures
• Long-distance supercurrent transport in a room-temperature Bose-Einstein magnon condensate
• Ultrastrong Magnon-Photon Coupling Achieved by Magnetic Films in Contact with Superconducting Resonators
• Strong magnon-photon coupling with chip-integrated YIG in the zero-temperature limit
• Tunable space-time crystal in room-temperature magnetodielectrics
• Magnetic anisotropy and GGG substrate stray field in YIG films down to millikelvin temperatures
• Propagating spin-wave spectroscopy in nanometer-thick YIG films at millikelvin temperatures
• Quantum ergodicity in the many-body localization problem
• Integration and characterization of micron-sized YIG structures with very low Gilbert damping on arbitrary substrates
• Nanoscale X-Ray Imaging of Spin Dynamics in Yttrium Iron Garnet
• Unconventional spin currents in magnetic films
• Strong coupling of Fe-Co alloy with ultralow damping to superconducting co-planar waveguide resonators
• Lattice-tunable substituted iron garnets for low-temperature magnonics
• Intrinsic topological magnons in arrays of magnetic dipoles
• Damping Enhancement in YIG at Millikelvin Temperatures due to GGG Substrate
• Wavenumber-dependent magnetic losses in YIG-GGG heterostructures at millikelvin temperatures
• Confinement of Bose-Einstein magnon condensates in adjustable complex magnetization landscapes
• Magnon Bose-Einstein condensate and supercurrents over a wide temperature range
• Effective quantum dynamics induced by a driven two-level-system bath
• YSGAG: The Ideal Substrate for YIG in Quantum Magnonics
• Temperature dependence of the mean magnon collision time in a spin Seebeck device
• Topological edge states in dipolar zig-zag stripes