Chirality from interfacial spin-orbit coupling effects in magnetic bilayers

Kyoung Whan Kim, Hyun Woo Lee, Kyoung Jin Lee, M. D. Stiles

Research output: Contribution to journalArticle

90 Citations (Scopus)

Abstract

As nanomagnetic devices scale to smaller sizes, spin-orbit coupling due to the broken structural inversion symmetry at interfaces becomes increasingly important. Here, we study interfacial spin-orbit coupling effects in magnetic bilayers using a simple Rashba model. The spin-orbit coupling introduces chirality into the behavior of the electrons and through them into the energetics of the magnetization. In the derived form of the magnetization dynamics, all of the contributions that are linear in the spin-orbit coupling follow from this chirality, considerably simplifying the analysis. For these systems, an important consequence is a correlation between the Dzyaloshinskii-Moriya interaction and the spin-orbit torque. We use this correlation to analyze recent experiments.

Original languageEnglish
Article number216601
JournalPhysical Review Letters
Volume111
Issue number21
DOIs
Publication statusPublished - 2013 Nov 19

Fingerprint

chirality
orbits
magnetization
torque
inversions
symmetry
electrons
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Chirality from interfacial spin-orbit coupling effects in magnetic bilayers. / Kim, Kyoung Whan; Lee, Hyun Woo; Lee, Kyoung Jin; Stiles, M. D.

In: Physical Review Letters, Vol. 111, No. 21, 216601, 19.11.2013.

Research output: Contribution to journalArticle

Kim, Kyoung Whan ; Lee, Hyun Woo ; Lee, Kyoung Jin ; Stiles, M. D. / Chirality from interfacial spin-orbit coupling effects in magnetic bilayers. In: Physical Review Letters. 2013 ; Vol. 111, No. 21.
@article{fda1666354954e29893de2d293c017db,
title = "Chirality from interfacial spin-orbit coupling effects in magnetic bilayers",
abstract = "As nanomagnetic devices scale to smaller sizes, spin-orbit coupling due to the broken structural inversion symmetry at interfaces becomes increasingly important. Here, we study interfacial spin-orbit coupling effects in magnetic bilayers using a simple Rashba model. The spin-orbit coupling introduces chirality into the behavior of the electrons and through them into the energetics of the magnetization. In the derived form of the magnetization dynamics, all of the contributions that are linear in the spin-orbit coupling follow from this chirality, considerably simplifying the analysis. For these systems, an important consequence is a correlation between the Dzyaloshinskii-Moriya interaction and the spin-orbit torque. We use this correlation to analyze recent experiments.",
author = "Kim, {Kyoung Whan} and Lee, {Hyun Woo} and Lee, {Kyoung Jin} and Stiles, {M. D.}",
year = "2013",
month = "11",
day = "19",
doi = "10.1103/PhysRevLett.111.216601",
language = "English",
volume = "111",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "21",

}

TY - JOUR

T1 - Chirality from interfacial spin-orbit coupling effects in magnetic bilayers

AU - Kim, Kyoung Whan

AU - Lee, Hyun Woo

AU - Lee, Kyoung Jin

AU - Stiles, M. D.

PY - 2013/11/19

Y1 - 2013/11/19

N2 - As nanomagnetic devices scale to smaller sizes, spin-orbit coupling due to the broken structural inversion symmetry at interfaces becomes increasingly important. Here, we study interfacial spin-orbit coupling effects in magnetic bilayers using a simple Rashba model. The spin-orbit coupling introduces chirality into the behavior of the electrons and through them into the energetics of the magnetization. In the derived form of the magnetization dynamics, all of the contributions that are linear in the spin-orbit coupling follow from this chirality, considerably simplifying the analysis. For these systems, an important consequence is a correlation between the Dzyaloshinskii-Moriya interaction and the spin-orbit torque. We use this correlation to analyze recent experiments.

AB - As nanomagnetic devices scale to smaller sizes, spin-orbit coupling due to the broken structural inversion symmetry at interfaces becomes increasingly important. Here, we study interfacial spin-orbit coupling effects in magnetic bilayers using a simple Rashba model. The spin-orbit coupling introduces chirality into the behavior of the electrons and through them into the energetics of the magnetization. In the derived form of the magnetization dynamics, all of the contributions that are linear in the spin-orbit coupling follow from this chirality, considerably simplifying the analysis. For these systems, an important consequence is a correlation between the Dzyaloshinskii-Moriya interaction and the spin-orbit torque. We use this correlation to analyze recent experiments.

UR - http://www.scopus.com/inward/record.url?scp=84888350359&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84888350359&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.111.216601

DO - 10.1103/PhysRevLett.111.216601

M3 - Article

VL - 111

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 21

M1 - 216601

ER -