Non-Hermitian coherent coupling of nanomagnets by exchange spin waves
arXiv:2005.10452 · doi:10.1007/s12274-020-3251-5
Abstract
Non-Hermitian physics has recently attracted much attention in optics and photonics. Less explored is non-Hermitian magnonics that provides opportunities to take advantage of the inevitable dissipation of magnons or spin waves in magnetic systems. Here we demonstrate non-Hermitian coherent coupling of two distant nanomagnets by fast spin waves with sub-50 nm wavelengths. Magnons in two nanomagnets are unidirectionally phase-locked with phase shifts controlled by magnon spin torque and spin-wave propagation. Our results are attractive for analog neuromorphic computing that requires unidirectional information transmission.
References in corpus (30)
- Introduction to Quantum Noise, Measurement and Amplification
- Nonlocal magnetization dynamics in ferromagnetic heterostructures
- The building blocks of magnonics
- Dynamic exchange coupling in magnetic bilayers
- Level Attraction Due to Dissipative Magnon-Photon Coupling
- Spin pumping by parametrically excited exchange magnons
- Spin waves in coupled YIG/Co heterostructures
- Measurements of the exchange stiffness of YIG films by microwave resonance techniques
- Phase reciprocity of spin-wave excitation by a microstrip antenna
- Excitation of unidirectional exchange spin waves by a nanoscale magnetic grating
- Magnon Valve Effect Between Two Magnetic Insulators
- Knotted Non-Hermitian Metals
- Synchronized spin-photon coupling in a microwave cavity
- Coherent spin pumping in a strongly coupled magnon-magnon hybrid system
- Propagation of spin-waves packets in individual nano-sized yttrium iron garnet magnonic conduits
- Coherent excitation of heterosymmetric spin waves with ultrashort wavelengths
- All electrical propagating spin wave spectroscopy with broadband wavevector capability
- One-dimentional magnonic crystal as a medium with magnetically tunable disorder on a periodical lattice
- Ferroic collinear multilayer magnon spin valve
- Bose-Einstein Condensation of Quasi-Particles by Rapid Cooling
- Purely magnetic logic based on polarized spin waves
- Creation of uni-directional spin-wave emitters by utilizing interfacial Dzyaloshinskii-Moriya interaction
- Chiral Pumping of Spin Waves
- Unidirectional spin-wave channeling along magnetic domain walls of Bloch type
- Giant nonreciprocal emission of spin waves in Ta/Py bilayers
- Measurement of the dynamical dipolar coupling in a pair of magnetic nano-disks using a Ferromagnetic Resonance Force Microscope
- Sensing chiral magnetic noise via quantum impurity relaxometry
- Magnon Trap by Chiral Spin Pumping
- Excitation and detection of short-waved spin waves in ultrathin Ta/CoFeB/MgO-layer system suitable for spin-orbit-torque magnonics
- Non-Contact Spin Pumping by Microwave Evanescent Fields
Cited by in corpus (8)
- Chirality as Generalized Spin-Orbit Interaction in Spintronics
- Strong Long-Range Spin-Spin Coupling via a Kerr Magnon Interface
- Magnon confinement in an all-on-chip YIG cavity resonator using hybrid YIG/Py magnon barriers
- Electromagnetic Proximity Effect: Superconducting Magnonics and Beyond
- Nonreciprocal Spin Waves Driven by Left-Hand Microwaves
- Electrical manipulation of a hole `spin'-orbit qubit in nanowire quantum dot: the nontrivial magnetic field effects
- Nonreciprocal Spin Waves in Nanoscale Domain Walls Detected by Scanning X-ray Microscopy in Perpendicular Magnetic Anisotropic Fe/Gd Multilayers
- Chiral Magnonic Resonators: Rediscovering the Basic Magnetic Chirality in Magnonics