Role of non-collinear polarizer layer in spin transfer torque switching processes

Chun Yeol You; Myung Hwa Jung

doi:10.1063/1.4812585

Role of non-collinear polarizer layer in spin transfer torque switching processes

Chun Yeol You, Myung Hwa Jung

Department of Physics and Chemistry

Sogang University

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

3 Scopus citations

Abstract

We recently reported that spin transfer torque switching current density is very sensitive to the junction sizes and the exchange stiffness constants of the free layer, based on micromagnetic simulations. The results are very complicated and far from the simple macro-spin model because of the non-coherent spin switching processes. The dependence of switching current density on junction sizes and the exchange stiffness constants becomes systematic when we employ the non-collinear polarizer layer. We found that the non-collinear polarizer layer enhances the coherency of the spin dynamics by breaking symmetric spin configurations and causes noticeable reductions in the switching current density.

Original language	English
Article number	013909
Journal	Journal of Applied Physics
Volume	114
Issue number	1
DOIs	https://doi.org/10.1063/1.4812585
State	Published - 7 Jul 2013

Bibliographical note

Funding Information:
This work was supported by National Research Foundation funds (Nos. 2010-0023798 and 2010-0022040, Nuclear R&D Program 2012M2A2A6004261) of the Ministry of Education, Science and Technology (MEST) of the Korean government, and by the IT R&D program of the (MKE/KEIT) (No. 10043398).

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title = "Role of non-collinear polarizer layer in spin transfer torque switching processes",

abstract = "We recently reported that spin transfer torque switching current density is very sensitive to the junction sizes and the exchange stiffness constants of the free layer, based on micromagnetic simulations. The results are very complicated and far from the simple macro-spin model because of the non-coherent spin switching processes. The dependence of switching current density on junction sizes and the exchange stiffness constants becomes systematic when we employ the non-collinear polarizer layer. We found that the non-collinear polarizer layer enhances the coherency of the spin dynamics by breaking symmetric spin configurations and causes noticeable reductions in the switching current density.",

author = "You, \{Chun Yeol\} and Jung, \{Myung Hwa\}",

note = "Funding Information: This work was supported by National Research Foundation funds (Nos. 2010-0023798 and 2010-0022040, Nuclear R\&D Program 2012M2A2A6004261) of the Ministry of Education, Science and Technology (MEST) of the Korean government, and by the IT R\&D program of the (MKE/KEIT) (No. 10043398).",

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AU - You, Chun Yeol

AU - Jung, Myung Hwa

N1 - Funding Information: This work was supported by National Research Foundation funds (Nos. 2010-0023798 and 2010-0022040, Nuclear R&D Program 2012M2A2A6004261) of the Ministry of Education, Science and Technology (MEST) of the Korean government, and by the IT R&D program of the (MKE/KEIT) (No. 10043398).

PY - 2013/7/7

Y1 - 2013/7/7

N2 - We recently reported that spin transfer torque switching current density is very sensitive to the junction sizes and the exchange stiffness constants of the free layer, based on micromagnetic simulations. The results are very complicated and far from the simple macro-spin model because of the non-coherent spin switching processes. The dependence of switching current density on junction sizes and the exchange stiffness constants becomes systematic when we employ the non-collinear polarizer layer. We found that the non-collinear polarizer layer enhances the coherency of the spin dynamics by breaking symmetric spin configurations and causes noticeable reductions in the switching current density.

AB - We recently reported that spin transfer torque switching current density is very sensitive to the junction sizes and the exchange stiffness constants of the free layer, based on micromagnetic simulations. The results are very complicated and far from the simple macro-spin model because of the non-coherent spin switching processes. The dependence of switching current density on junction sizes and the exchange stiffness constants becomes systematic when we employ the non-collinear polarizer layer. We found that the non-collinear polarizer layer enhances the coherency of the spin dynamics by breaking symmetric spin configurations and causes noticeable reductions in the switching current density.

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JO - Journal of Applied Physics

JF - Journal of Applied Physics

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Role of non-collinear polarizer layer in spin transfer torque switching processes

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