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 language | English |
|---|---|
| Article number | 216601 |
| Journal | Physical Review Letters |
| Volume | 111 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 2013 Nov 19 |
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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 journal › Article
}
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.
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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 -