Research paperTheoreticalComputational MultiscaleMagnon confinement in a nanomagnonic waveguide by a magnetic Moiré superlatticeJilei Chen, Marco Madami, Gianluca Gubbiotti, Haiming Yu2025·10.1063/5.0230523·arXiv:2410.05765AbstractThe study of moiré superlattices has revealed intriguing phenomena in electronic systems, including unconventional superconductivity and ferromagnetism observed in magic-angle bilayer graphene. This approach has recently been adapted to the field of magnonics. In this Letter, we investigate the confinement of spin waves in a nanomagnonic waveguide integrated on top of a magnetic moiré superlattice. Our numerical analysis reveals a magnonic flat-band at the centre of the Brillouin zone, created by a 3.5 degrees twist in the moiré superlattice. The flat-band, characterized by a high magnon density of states and a zero group velocity, allows for the confinement of magnons within the AB stacking region. The flat-band results from the mode anticrossing of several different magnon bands, covering a wavevector range of nearly 40 rad/μm and a 166 nm wide spatial distribution of the magnon trapping in the waveguide. Our results pave the way for nanomagnonic devices and circuits based on spin-wave trapping in magnon waveguides.Read more
Single magnonic waveguide made of YIG with width 500 nm used as the reference propagation system.5 propertiesSimulatedY₃Fe₅O₁₂Studied MaterialExpand
Twisted bilayer YIG antidot-lattice moiré superlattice with an overlying YIG nanomagnonic waveguide centered in the AB stacking region.4 propertiesSimulatedY₃Fe₅O₁₂Studied MaterialExpand
Research paperTheoreticalComputational MultiscaleMagnon confinement in a nanomagnonic waveguide by a magnetic Moiré superlatticeJilei Chen, Marco Madami, Gianluca Gubbiotti, Haiming Yu2025·10.1063/5.0230523·arXiv:2410.05765AbstractThe study of moiré superlattices has revealed intriguing phenomena in electronic systems, including unconventional superconductivity and ferromagnetism observed in magic-angle bilayer graphene. This approach has recently been adapted to the field of magnonics. In this Letter, we investigate the confinement of spin waves in a nanomagnonic waveguide integrated on top of a magnetic moiré superlattice. Our numerical analysis reveals a magnonic flat-band at the centre of the Brillouin zone, created by a 3.5 degrees twist in the moiré superlattice. The flat-band, characterized by a high magnon density of states and a zero group velocity, allows for the confinement of magnons within the AB stacking region. The flat-band results from the mode anticrossing of several different magnon bands, covering a wavevector range of nearly 40 rad/μm and a 166 nm wide spatial distribution of the magnon trapping in the waveguide. Our results pave the way for nanomagnonic devices and circuits based on spin-wave trapping in magnon waveguides.Read more
Single magnonic waveguide made of YIG with width 500 nm used as the reference propagation system.5 propertiesSimulatedY₃Fe₅O₁₂Studied MaterialExpand
Twisted bilayer YIG antidot-lattice moiré superlattice with an overlying YIG nanomagnonic waveguide centered in the AB stacking region.4 propertiesSimulatedY₃Fe₅O₁₂Studied MaterialExpand
Research paperTheoreticalComputational MultiscaleMagnon confinement in a nanomagnonic waveguide by a magnetic Moiré superlatticeJilei Chen, Marco Madami, Gianluca Gubbiotti, Haiming Yu2025·10.1063/5.0230523·arXiv:2410.05765AbstractThe study of moiré superlattices has revealed intriguing phenomena in electronic systems, including unconventional superconductivity and ferromagnetism observed in magic-angle bilayer graphene. This approach has recently been adapted to the field of magnonics. In this Letter, we investigate the confinement of spin waves in a nanomagnonic waveguide integrated on top of a magnetic moiré superlattice. Our numerical analysis reveals a magnonic flat-band at the centre of the Brillouin zone, created by a 3.5 degrees twist in the moiré superlattice. The flat-band, characterized by a high magnon density of states and a zero group velocity, allows for the confinement of magnons within the AB stacking region. The flat-band results from the mode anticrossing of several different magnon bands, covering a wavevector range of nearly 40 rad/μm and a 166 nm wide spatial distribution of the magnon trapping in the waveguide. Our results pave the way for nanomagnonic devices and circuits based on spin-wave trapping in magnon waveguides.Read more
Single magnonic waveguide made of YIG with width 500 nm used as the reference propagation system.5 propertiesSimulatedY₃Fe₅O₁₂Studied MaterialExpand
Twisted bilayer YIG antidot-lattice moiré superlattice with an overlying YIG nanomagnonic waveguide centered in the AB stacking region.4 propertiesSimulatedY₃Fe₅O₁₂Studied MaterialExpand
Research paperTheoreticalComputational MultiscaleMagnon confinement in a nanomagnonic waveguide by a magnetic Moiré superlatticeJilei Chen, Marco Madami, Gianluca Gubbiotti, Haiming Yu2025·10.1063/5.0230523·arXiv:2410.05765AbstractThe study of moiré superlattices has revealed intriguing phenomena in electronic systems, including unconventional superconductivity and ferromagnetism observed in magic-angle bilayer graphene. This approach has recently been adapted to the field of magnonics. In this Letter, we investigate the confinement of spin waves in a nanomagnonic waveguide integrated on top of a magnetic moiré superlattice. Our numerical analysis reveals a magnonic flat-band at the centre of the Brillouin zone, created by a 3.5 degrees twist in the moiré superlattice. The flat-band, characterized by a high magnon density of states and a zero group velocity, allows for the confinement of magnons within the AB stacking region. The flat-band results from the mode anticrossing of several different magnon bands, covering a wavevector range of nearly 40 rad/μm and a 166 nm wide spatial distribution of the magnon trapping in the waveguide. Our results pave the way for nanomagnonic devices and circuits based on spin-wave trapping in magnon waveguides.Read more
Single magnonic waveguide made of YIG with width 500 nm used as the reference propagation system.5 propertiesSimulatedY₃Fe₅O₁₂Studied MaterialExpand
Twisted bilayer YIG antidot-lattice moiré superlattice with an overlying YIG nanomagnonic waveguide centered in the AB stacking region.4 propertiesSimulatedY₃Fe₅O₁₂Studied MaterialExpand
