Spin-transfer-driven spin-waves excitation in a finite-size magnetic waveguide

2015 ◽  
Vol 379 (16-17) ◽  
pp. 1161-1168
Author(s):  
Giancarlo Consolo ◽  
Carmela Currò ◽  
Giovanna Valenti
Keyword(s):  
Spin Waves ◽  
Finite Size ◽  
Spin Transfer ◽  
Magnetic Waveguide

Spin-Wave Dynamics in Antiferromagnets under Electric Current

2021 ◽  
Vol 1 ◽  
Keyword(s):  
Electric Current ◽  
Spin Wave ◽  
Doppler Effect ◽  
Spin Waves ◽  
Microscopic Analysis ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Wave Dynamics

Electric current causes a Doppler effect in spin waves in ferromagnets through a spin-transfer torque. We report that antiferromagnets allow two such spin-transfer torques and present a microscopic analysis that interpolates ferro- and antiferromagnetic transport regimes.

Amplification of Spin Waves by Thermal Spin-Transfer Torque

2011 ◽  
Vol 107 (19) ◽  
Author(s):  
E. Padrón-Hernández ◽  
A. Azevedo ◽  
S. M. Rezende
Keyword(s):  
Spin Waves ◽  
Spin Transfer Torque ◽  
Spin Transfer

scholarly journals Frequency shift of spin waves in tunnel-junction spin-transfer nano-oscillators

2010 ◽  
Vol 82 (13) ◽  
Author(s):  
R. L. Rodríguez-Suárez ◽  
A. Matos-Abiague ◽  
A. Azevedo ◽  
S. M. Rezende
Keyword(s):  
Frequency Shift ◽  
Tunnel Junction ◽  
Spin Waves ◽  
Spin Transfer

scholarly journals Spin-transfer torque induced spin waves in antiferromagnetic insulators

2015 ◽  
Vol 17 (10) ◽  
pp. 103039 ◽  
Author(s):  
Matthew W Daniels ◽  
Wei Guo ◽  
G Malcolm Stocks ◽  
Di Xiao ◽  
Jiang Xiao
Keyword(s):  
Spin Waves ◽  
Spin Transfer Torque ◽  
Spin Transfer

scholarly journals Excitations of incoherent spin-waves due to spin-transfer torque

2004 ◽  
Vol 3 (12) ◽  
pp. 877-881 ◽  
Author(s):  
Kyung-Jin Lee ◽  
Alina Deac ◽  
Olivier Redon ◽  
Jean-Pierre Nozières ◽  
Bernard Dieny
Keyword(s):  
Spin Waves ◽  
Spin Transfer Torque ◽  
Spin Transfer

Strong high-frequency spin waves released periodically from a confined region

2020 ◽  
Vol 91 (3) ◽  
pp. 30601
Author(s):  
Zhen-Wei Zhou ◽  
Xi-Guang Wang ◽  
Yao-Ghuang Nie ◽  
Qing-Lin Xia ◽  
Guang-Hua Guo
Keyword(s):  
Relaxation Time ◽  
Spin Wave ◽  
High Frequency ◽  
Microwave Field ◽  
Spin Waves ◽  
Spin Transfer Torque ◽  
Micromagnetic Simulation ◽  
Spin Transfer ◽  
Limited Region ◽  
Strong Spin

Efficient excitation of spin waves is a key issue in magnonics. Here, by using micromagnetic simulation and analytical analysis, we study the excitation of spin waves confined in a limited region by a microwave field with assistance of spin-transfer torque. The results show that the spin-transfer torque can decrease the effective damping constant and increase the spin wave relaxation time substantially. As a result, the amplitude of the excited spin waves is increased greatly. By periodically lifting and establishing the blocking areas, strong spin-wave pulses are released from the confined region. Such generated spin-wave pulses are much stronger than traditionally excited spin waves, especially for high-frequency spin waves. Our study provides a new method to generate strong high-frequency spin waves.

scholarly journals Control of propagating spin waves via spin transfer torque in a metallic bilayer waveguide

2014 ◽  
Vol 89 (14) ◽  
Author(s):  
Kyongmo An ◽  
Daniel R. Birt ◽  
Chi-Feng Pai ◽  
Kevin Olsson ◽  
Daniel C. Ralph ◽  
...  
Keyword(s):  
Spin Waves ◽  
Spin Transfer Torque ◽  
Spin Transfer

scholarly journals Theory of standing spin waves in a finite-size chiral spin soliton lattice

2019 ◽  
Vol 100 (2) ◽  
Author(s):  
J. Kishine ◽  
Vl. E. Sinitsyn ◽  
I. G. Bostrem ◽  
Igor Proskurin ◽  
F. J. T. Goncalves ◽  
...  
Keyword(s):  
Spin Waves ◽  
Finite Size ◽  
Soliton Lattice
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