Transmission of electrical signals by spin-wave interconversion in a magnetic insulator

Nature ◽  
2010 ◽  
Vol 464 (7286) ◽  
pp. 262-266 ◽  
Author(s):  
Y. Kajiwara ◽  
K. Harii ◽  
S. Takahashi ◽  
J. Ohe ◽  
K. Uchida ◽  
...  
Keyword(s):  
Spin Wave ◽  
Electrical Signals ◽  
Magnetic Insulator

scholarly journals Full Control of the Spin-Wave Damping in a Magnetic Insulator Using Spin-Orbit Torque

2014 ◽  
Vol 113 (19) ◽  
Author(s):  
A. Hamadeh ◽  
O. d’Allivy Kelly ◽  
C. Hahn ◽  
H. Meley ◽  
R. Bernard ◽  
...  
Keyword(s):  
Spin Wave ◽  
Spin Orbit ◽  
Wave Damping ◽  
Full Control ◽  
Magnetic Insulator

scholarly journals THE INFLUENCE OF “INJECTED” AND “THERMAL” MAGNONS ON A SPIN WAVE CURRENT AND DRAG EFFECT IN HYBRID STRUCTURES

2018 ◽  
Vol 185 ◽  
pp. 01022
Author(s):  
Igor Lyapilin ◽  
Mikhail Okorokov
Keyword(s):  
Spin Wave ◽  
Metal Structure ◽  
Relaxation Mechanism ◽  
Seebeck Effect ◽  
Hybrid Structures ◽  
Momentum Balance ◽  
Drag Effect ◽  
Balance Equations ◽  
Spin Seebeck Effect ◽  
Magnetic Insulator

The formation of the two: injected and thermally excited, different in energies magnon subsystems and the influence of its interaction with phonons and between on drag effect under spin Seebeck effect conditions in the magnetic insulator part of the metal/ferromagnetic insulator/metal structure is studied. The analysis of the macroscopic momentum balance equations of the systems of interest conducted for different ratios of the drift velocities of the magnon and phonon currents show that the injected magnons relaxation on the thermal ones is possible to be dominant over its relaxation on phonons. This interaction will be the defining in the forming of the temperature dependence of the spin-wave current under spin Seebeck effect conditions, and inelastic part of the magnon-magnon interaction is the dominant spin relaxation mechanism.

Detection of Spin-Wave Spin Current in a Magnetic Insulator

2011 ◽  
Vol 47 (6) ◽  
pp. 1591-1594 ◽  
Author(s):  
Y. Kajiwara ◽  
S. Takahashi ◽  
S. Maekawa ◽  
E. Saitoh
Keyword(s):  
Spin Wave ◽  
Spin Current ◽  
Magnetic Insulator

scholarly journals Magnetic resonance imaging of spin-wave transport and interference in a magnetic insulator

2020 ◽  
Vol 6 (46) ◽  
pp. eabd3556
Author(s):  
Iacopo Bertelli ◽  
Joris J. Carmiggelt ◽  
Tao Yu ◽  
Brecht G. Simon ◽  
Coosje C. Pothoven ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Spin Wave ◽  
Spin Waves ◽  
Stray Field ◽  
Dense Layer ◽  
Resonance Imaging ◽  
Wave Transport ◽  
Magnetic Insulator ◽  
Coherent Spin

Spin waves—the elementary excitations of magnetic materials—are prime candidate signal carriers for low-dissipation information processing. Being able to image coherent spin-wave transport is crucial for developing interference-based spin-wave devices. We introduce magnetic resonance imaging of the microwave magnetic stray fields that are generated by spin waves as a new approach for imaging coherent spin-wave transport. We realize this approach using a dense layer of electronic sensor spins in a diamond chip, which combines the ability to detect small magnetic fields with a sensitivity to their polarization. Focusing on a thin-film magnetic insulator, we quantify spin-wave amplitudes, visualize spin-wave dispersion and interference, and demonstrate time-domain measurements of spin-wave packets. We theoretically explain the observed anisotropic spin-wave patterns in terms of chiral spin-wave excitation and stray-field coupling to the sensor spins. Our results pave the way for probing spin waves in atomically thin magnets, even when embedded between opaque materials.

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