Effect of nonadiabatic spin transfer torque on domain wall resonance frequency and mass

Mahdi Jamali; Kyung Jin Lee; Hyunsoo Yang

doi:10.1063/1.3560305

Effect of nonadiabatic spin transfer torque on domain wall resonance frequency and mass

Mahdi Jamali, Kyung Jin Lee, Hyunsoo Yang

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The dynamics of a magnetic domain wall in a semi circular nanowire loop is studied by an analytical model and micromagnetic simulations. We find a damped sinusoidal oscillation of the domain wall for small displacement angles around its equilibrium position under an external magnetic field in the absence of currents. By studying the effect of current induced nonadiabatic spin transfer torque on the magnetic domain wall resonance frequency and mass, a redshift is found in the resonance frequency and domain wall mass increases by increasing the ratio of nonadiabatic spin torque to adiabatic contribution above 1.

Original language	English (US)
Article number	092501
Journal	Applied Physics Letters
Volume	98
Issue number	9
DOIs	https://doi.org/10.1063/1.3560305
State	Published - Feb 28 2011
Externally published	Yes

Bibliographical note

Funding Information:
This work is supported by the Singapore National Research Foundation under CRP Award No. NRF-CRP 4-2008-06.

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10.1063/1.3560305

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abstract = "The dynamics of a magnetic domain wall in a semi circular nanowire loop is studied by an analytical model and micromagnetic simulations. We find a damped sinusoidal oscillation of the domain wall for small displacement angles around its equilibrium position under an external magnetic field in the absence of currents. By studying the effect of current induced nonadiabatic spin transfer torque on the magnetic domain wall resonance frequency and mass, a redshift is found in the resonance frequency and domain wall mass increases by increasing the ratio of nonadiabatic spin torque to adiabatic contribution above 1.",

author = "Mahdi Jamali and Lee, {Kyung Jin} and Hyunsoo Yang",

note = "Funding Information: This work is supported by the Singapore National Research Foundation under CRP Award No. NRF-CRP 4-2008-06.",

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AU - Jamali, Mahdi

AU - Lee, Kyung Jin

AU - Yang, Hyunsoo

N1 - Funding Information: This work is supported by the Singapore National Research Foundation under CRP Award No. NRF-CRP 4-2008-06.

PY - 2011/2/28

Y1 - 2011/2/28

N2 - The dynamics of a magnetic domain wall in a semi circular nanowire loop is studied by an analytical model and micromagnetic simulations. We find a damped sinusoidal oscillation of the domain wall for small displacement angles around its equilibrium position under an external magnetic field in the absence of currents. By studying the effect of current induced nonadiabatic spin transfer torque on the magnetic domain wall resonance frequency and mass, a redshift is found in the resonance frequency and domain wall mass increases by increasing the ratio of nonadiabatic spin torque to adiabatic contribution above 1.

AB - The dynamics of a magnetic domain wall in a semi circular nanowire loop is studied by an analytical model and micromagnetic simulations. We find a damped sinusoidal oscillation of the domain wall for small displacement angles around its equilibrium position under an external magnetic field in the absence of currents. By studying the effect of current induced nonadiabatic spin transfer torque on the magnetic domain wall resonance frequency and mass, a redshift is found in the resonance frequency and domain wall mass increases by increasing the ratio of nonadiabatic spin torque to adiabatic contribution above 1.

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Effect of nonadiabatic spin transfer torque on domain wall resonance frequency and mass

Abstract

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