Switchable Spin-Current Source Controlled by Magnetic Domain Walls

Nano Letters ◽  
2014 ◽  
Vol 14 (7) ◽  
pp. 4016-4022 ◽  
Author(s):  
W. Savero Torres ◽  
P. Laczkowski ◽  
V. D. Nguyen ◽  
J. C. Rojas Sanchez ◽  
L. Vila ◽  
...  
Keyword(s):  
Domain Walls ◽  
Current Source ◽  
Spin Current ◽  
Magnetic Domain ◽  
Magnetic Domain Walls

scholarly journals Ultrafast time-evolution of chiral Néel magnetic domain walls probed by circular dichroism in x-ray resonant magnetic scattering.

2021 ◽  
Author(s):  
Cyril Lévéillé ◽  
Erick Burgos-Parra ◽  
Yanis Sassi ◽  
Fernando Ajejas ◽  
Valentin Chardonnet ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Optical Pumping ◽  
Domain Walls ◽  
Spin Current ◽  
Magnetic Domain ◽  
Magnetic Interactions ◽  
Magnetic Scattering ◽  
X Ray ◽  
Magnetic Domain Walls ◽  
Circular Dichroïsm

Abstract Non-collinear spin textures in ferromagnetic ultrathin films are attracting a renewed interest fueled by possible fine engineering of several magnetic interactions, notably the interfacial Dzyaloshinskii-Moriya interaction. This allows the stabilization of complex chiral spin textures such as chiral magnetic domain walls (DWs), spin spirals, and magnetic skyrmions. We report here on the ultrafast behavior of chiral DWs after optical pumping in perpendicularly magnetized asymmetric multilayers, probed using time-resolved circular dichroism in x-ray resonant magnetic scattering (CD-XRMS). We observe a picosecond transient reduction of the CD-XRMS, which is attributed to the spin current-induced coherent and incoherent torques within the continuously dependent spin texture of the DWs. We argue that a specific demagnetization of the inner structure of the DW induces a flow of spins from the interior of the neighboring magnetic domains. We identify this time-varying change of the DW texture shortly after the laser pulse as a distortion of the homochiral Néel shape toward a transient mixed Bloch-Néel-Bloch texture along a direction transverse to the DW.

Mutual control of coherent spin waves and magnetic domain walls in a magnonic device

Science ◽  
2019 ◽  
Vol 366 (6469) ◽  
pp. 1121-1125 ◽  
Author(s):  
Jiahao Han ◽  
Pengxiang Zhang ◽  
Justin T. Hou ◽  
Saima A. Siddiqui ◽  
Luqiao Liu
Keyword(s):  
Spin Wave ◽  
Domain Walls ◽  
Spin Waves ◽  
Spin Current ◽  
Magnetic Domain ◽  
Spin Transfer Torque ◽  
Successful Implementation ◽  
Domain Structures ◽  
Magnetic Domain Walls ◽  
Coherent Spin

The successful implementation of spin-wave devices requires efficient modulation of spin-wave propagation. Using cobalt/nickel multilayer films, we experimentally demonstrate that nanometer-wide magnetic domain walls can be applied to manipulate the phase and magnitude of coherent spin waves in a nonvolatile manner. We further show that a spin wave can, in turn, be used to change the position of magnetic domain walls by means of the spin-transfer torque effect generated from magnon spin current. This mutual interaction between spin waves and magnetic domain walls opens up the possibility of realizing all-magnon spintronic devices, in which one spin-wave signal can be used to control others by reconfiguring magnetic domain structures.

scholarly journals Phase shifter based on voltage-controlled magnetic domain walls

AIP Advances ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 075225
Author(s):  
Xiao Zhang ◽  
Chen Zhang ◽  
Chonglei Sun ◽  
Xiao Xu ◽  
Liuge Du ◽  
...  
Keyword(s):  
Phase Shifter ◽  
Domain Walls ◽  
Magnetic Domain ◽  
Magnetic Domain Walls

scholarly journals Direct observation of the coherent precession of magnetic domain walls propagating along permalloy nanowires

2006 ◽  
Vol 3 (1) ◽  
pp. 21-25 ◽  
Author(s):  
Masamitsu Hayashi ◽  
Luc Thomas ◽  
Charles Rettner ◽  
Rai Moriya ◽  
Stuart S. P. Parkin
Keyword(s):  
Direct Observation ◽  
Domain Walls ◽  
Magnetic Domain ◽  
Magnetic Domain Walls
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