Numerical computation of spin-transfer torques for antiferromagnetic domain walls

Hyeon Jong Park; Yunboo Jeong; Se Hyeok Oh; Gyungchoon Go; Jung Hyun Oh; Kyoung Whan Kim; Hyun Woo Lee; Kyoung Jin Lee

doi:10.1103/PhysRevB.101.144431

Numerical computation of spin-transfer torques for antiferromagnetic domain walls

Hyeon Jong Park, Yunboo Jeong, Se Hyeok Oh, Gyungchoon Go, Jung Hyun Oh, Kyoung Whan Kim, Hyun Woo Lee, Kyoung Jin Lee

Department of Materials Science and Engineering

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

8 Citations (Scopus)

Abstract

We numerically compute current-induced spin-transfer torques for antiferromagnetic domain walls, based on a linear response theory in a tight-binding model. We find that, unlike for ferromagnetic domain-wall motion, the contribution of adiabatic spin torque to antiferromagnetic domain-wall motion is negligible, consistent with previous theories. As a result, the nonadiabatic spin-transfer torque is a main driving torque for antiferromagnetic domain-wall motion. Moreover, the nonadiabatic spin-transfer torque for narrower antiferromagnetic domain walls increases more rapidly than that for ferromagnetic domain walls, which is attributed to the enhanced spin mistracking process for antiferromagnetic domain walls.

Original language	English
Article number	144431
Journal	Physical Review B
Volume	101
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.101.144431
Publication status	Published - 2020 Apr 1

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation (NRF) of Korea (Grants No. NRF-2015M3D1A1070465, No. NRF-2017R1A2B2006119) and by the Korea Institute of Science and Technology (KIST) Institutional Program (Projects No. 2V05750, No. 2E30600). G.G. was supported by the NRF of Korea (Grant No. NRF-2019R1I1A1A01063594). H.-W.L. was supported by the NRF of Korea (Grant No. NRF-2018R1A5A6075964).

Publisher Copyright:
© 2020 American Physical Society.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.101.144431

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title = "Numerical computation of spin-transfer torques for antiferromagnetic domain walls",

abstract = "We numerically compute current-induced spin-transfer torques for antiferromagnetic domain walls, based on a linear response theory in a tight-binding model. We find that, unlike for ferromagnetic domain-wall motion, the contribution of adiabatic spin torque to antiferromagnetic domain-wall motion is negligible, consistent with previous theories. As a result, the nonadiabatic spin-transfer torque is a main driving torque for antiferromagnetic domain-wall motion. Moreover, the nonadiabatic spin-transfer torque for narrower antiferromagnetic domain walls increases more rapidly than that for ferromagnetic domain walls, which is attributed to the enhanced spin mistracking process for antiferromagnetic domain walls.",

author = "Park, {Hyeon Jong} and Yunboo Jeong and Oh, {Se Hyeok} and Gyungchoon Go and Oh, {Jung Hyun} and Kim, {Kyoung Whan} and Lee, {Hyun Woo} and Lee, {Kyoung Jin}",

note = "Funding Information: This work was supported by the National Research Foundation (NRF) of Korea (Grants No. NRF-2015M3D1A1070465, No. NRF-2017R1A2B2006119) and by the Korea Institute of Science and Technology (KIST) Institutional Program (Projects No. 2V05750, No. 2E30600). G.G. was supported by the NRF of Korea (Grant No. NRF-2019R1I1A1A01063594). H.-W.L. was supported by the NRF of Korea (Grant No. NRF-2018R1A5A6075964). Publisher Copyright: {\textcopyright} 2020 American Physical Society.",

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doi = "10.1103/PhysRevB.101.144431",

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T1 - Numerical computation of spin-transfer torques for antiferromagnetic domain walls

AU - Park, Hyeon Jong

AU - Jeong, Yunboo

AU - Oh, Se Hyeok

AU - Go, Gyungchoon

AU - Oh, Jung Hyun

AU - Kim, Kyoung Whan

AU - Lee, Hyun Woo

AU - Lee, Kyoung Jin

N1 - Funding Information: This work was supported by the National Research Foundation (NRF) of Korea (Grants No. NRF-2015M3D1A1070465, No. NRF-2017R1A2B2006119) and by the Korea Institute of Science and Technology (KIST) Institutional Program (Projects No. 2V05750, No. 2E30600). G.G. was supported by the NRF of Korea (Grant No. NRF-2019R1I1A1A01063594). H.-W.L. was supported by the NRF of Korea (Grant No. NRF-2018R1A5A6075964). Publisher Copyright: © 2020 American Physical Society.

PY - 2020/4/1

Y1 - 2020/4/1

N2 - We numerically compute current-induced spin-transfer torques for antiferromagnetic domain walls, based on a linear response theory in a tight-binding model. We find that, unlike for ferromagnetic domain-wall motion, the contribution of adiabatic spin torque to antiferromagnetic domain-wall motion is negligible, consistent with previous theories. As a result, the nonadiabatic spin-transfer torque is a main driving torque for antiferromagnetic domain-wall motion. Moreover, the nonadiabatic spin-transfer torque for narrower antiferromagnetic domain walls increases more rapidly than that for ferromagnetic domain walls, which is attributed to the enhanced spin mistracking process for antiferromagnetic domain walls.

AB - We numerically compute current-induced spin-transfer torques for antiferromagnetic domain walls, based on a linear response theory in a tight-binding model. We find that, unlike for ferromagnetic domain-wall motion, the contribution of adiabatic spin torque to antiferromagnetic domain-wall motion is negligible, consistent with previous theories. As a result, the nonadiabatic spin-transfer torque is a main driving torque for antiferromagnetic domain-wall motion. Moreover, the nonadiabatic spin-transfer torque for narrower antiferromagnetic domain walls increases more rapidly than that for ferromagnetic domain walls, which is attributed to the enhanced spin mistracking process for antiferromagnetic domain walls.

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Numerical computation of spin-transfer torques for antiferromagnetic domain walls

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