Dependence of the switching current density on the junction sizes in spin transfer torque

Chun Yeol You; Myung Hwa Jung

doi:10.1063/1.4792728

Dependence of the switching current density on the junction sizes in spin transfer torque

Chun Yeol You, Myung Hwa Jung

Department of Physics and Chemistry

Sogang University

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

16 Scopus citations

Abstract

We investigate the dependence of switching current density on the junction sizes in the in-plane spin transfer torque nanopillar structures by using micromagnetic simulations. While the macrospin model predicts weak dependence of switching current density on the junction sizes, we find that the switching current density is a sensitive function of the junction sizes. It can be explained with the complicated spin configurations and dynamics during the switching process. The detail spin configurations and dynamics are determined by spin wave excitation with the finite wave vector, which is related with the exchange coupling energy and junction shape.

Original language	English
Article number	073904
Journal	Journal of Applied Physics
Volume	113
Issue number	7
DOIs	https://doi.org/10.1063/1.4792728
State	Published - 21 Feb 2013

Bibliographical note

Funding Information:
This work was supported by the NRF funds (Grant Nos. 2010-0023798 and 2010-0022040, Nuclear R&D Program) of the MEST of Korea, and by the IT R&D program of MKE/KEIT (10043398).

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10.1063/1.4792728

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title = "Dependence of the switching current density on the junction sizes in spin transfer torque",

abstract = "We investigate the dependence of switching current density on the junction sizes in the in-plane spin transfer torque nanopillar structures by using micromagnetic simulations. While the macrospin model predicts weak dependence of switching current density on the junction sizes, we find that the switching current density is a sensitive function of the junction sizes. It can be explained with the complicated spin configurations and dynamics during the switching process. The detail spin configurations and dynamics are determined by spin wave excitation with the finite wave vector, which is related with the exchange coupling energy and junction shape.",

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

note = "Funding Information: This work was supported by the NRF funds (Grant Nos. 2010-0023798 and 2010-0022040, Nuclear R\&D Program) of the MEST of Korea, and by the IT R\&D program of MKE/KEIT (10043398).",

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AU - You, Chun Yeol

AU - Jung, Myung Hwa

N1 - Funding Information: This work was supported by the NRF funds (Grant Nos. 2010-0023798 and 2010-0022040, Nuclear R&D Program) of the MEST of Korea, and by the IT R&D program of MKE/KEIT (10043398).

PY - 2013/2/21

Y1 - 2013/2/21

N2 - We investigate the dependence of switching current density on the junction sizes in the in-plane spin transfer torque nanopillar structures by using micromagnetic simulations. While the macrospin model predicts weak dependence of switching current density on the junction sizes, we find that the switching current density is a sensitive function of the junction sizes. It can be explained with the complicated spin configurations and dynamics during the switching process. The detail spin configurations and dynamics are determined by spin wave excitation with the finite wave vector, which is related with the exchange coupling energy and junction shape.

AB - We investigate the dependence of switching current density on the junction sizes in the in-plane spin transfer torque nanopillar structures by using micromagnetic simulations. While the macrospin model predicts weak dependence of switching current density on the junction sizes, we find that the switching current density is a sensitive function of the junction sizes. It can be explained with the complicated spin configurations and dynamics during the switching process. The detail spin configurations and dynamics are determined by spin wave excitation with the finite wave vector, which is related with the exchange coupling energy and junction shape.

UR - https://www.scopus.com/pages/publications/84874614556

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JO - Journal of Applied Physics

JF - Journal of Applied Physics

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Dependence of the switching current density on the junction sizes in spin transfer torque

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