Quantification of Mixed Bloch-Néel Topological Spin Textures Stabilized by the Dzyaloshinskii-Moriya Interaction in Multilayers
Abstract
The three-dimensional structure of nanoscale topological spin textures stabilized by the Dzyaloshinskii-Moriya interaction is governed by the delicate competition between the exchange, demagnetization, and anisotropy energies. The quantification of such spin textures through direct experimental methods is crucial towards understanding the fundamental physics associated with their ordering, as well as their manipulation in spintronic devices. Here in this work, we extend the Lorentz transmission electron microscopy technique to quantify mixed Bloch-Néel chiral spin textures stabilized by the Dzyaloshinskii-Moriya interaction in Co / Pd multilayers. Analysis of the observed intensities under varied imaging conditions coupled to corroborative micromagnetic simulations yields vital parameters that dictate the stability and properties of the complex spin texture, namely, the degree of mixed Bloch-Néel character, the domain wall width, the strength of the Dzyaloshinskii-Moriya interaction, and the exchange stiffness. In conclusion, this approach provides the necessary framework for the application of quantitative Lorentz phase microscopy to a broad array of topological spin systems.
- Authors:
-
[1];
- Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)
- National Univ. of Singapore (Singapore)
- Technical Univ. of Denmark, Lyngby (Denmark)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1546048
- Alternate Identifier(s):
- OSTI ID: 1546360
- Report Number(s):
- BNL-211920-2019-JAAM
Journal ID: ISSN 0031-9007; PRLTAO
- Grant/Contract Number:
- SC0012704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 122; Journal Issue: 23; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Garlow, Joseph A., Pollard, Shawn D., Beleggia, Marco, Dutta, Tanmay, Yang, Hyunsoo, and Zhu, Yimei. Quantification of Mixed Bloch-Néel Topological Spin Textures Stabilized by the Dzyaloshinskii-Moriya Interaction in Co/Pd Multilayers. United States: N. p., 2019.
Web. doi:10.1103/PhysRevLett.122.237201.
Garlow, Joseph A., Pollard, Shawn D., Beleggia, Marco, Dutta, Tanmay, Yang, Hyunsoo, & Zhu, Yimei. Quantification of Mixed Bloch-Néel Topological Spin Textures Stabilized by the Dzyaloshinskii-Moriya Interaction in Co/Pd Multilayers. United States. https://doi.org/10.1103/PhysRevLett.122.237201
Garlow, Joseph A., Pollard, Shawn D., Beleggia, Marco, Dutta, Tanmay, Yang, Hyunsoo, and Zhu, Yimei. Mon .
"Quantification of Mixed Bloch-Néel Topological Spin Textures Stabilized by the Dzyaloshinskii-Moriya Interaction in Co/Pd Multilayers". United States. https://doi.org/10.1103/PhysRevLett.122.237201. https://www.osti.gov/servlets/purl/1546048.
@article{osti_1546048,
title = {Quantification of Mixed Bloch-Néel Topological Spin Textures Stabilized by the Dzyaloshinskii-Moriya Interaction in Co/Pd Multilayers},
author = {Garlow, Joseph A. and Pollard, Shawn D. and Beleggia, Marco and Dutta, Tanmay and Yang, Hyunsoo and Zhu, Yimei},
abstractNote = {The three-dimensional structure of nanoscale topological spin textures stabilized by the Dzyaloshinskii-Moriya interaction is governed by the delicate competition between the exchange, demagnetization, and anisotropy energies. The quantification of such spin textures through direct experimental methods is crucial towards understanding the fundamental physics associated with their ordering, as well as their manipulation in spintronic devices. Here in this work, we extend the Lorentz transmission electron microscopy technique to quantify mixed Bloch-Néel chiral spin textures stabilized by the Dzyaloshinskii-Moriya interaction in Co / Pd multilayers. Analysis of the observed intensities under varied imaging conditions coupled to corroborative micromagnetic simulations yields vital parameters that dictate the stability and properties of the complex spin texture, namely, the degree of mixed Bloch-Néel character, the domain wall width, the strength of the Dzyaloshinskii-Moriya interaction, and the exchange stiffness. In conclusion, this approach provides the necessary framework for the application of quantitative Lorentz phase microscopy to a broad array of topological spin systems.},
doi = {10.1103/PhysRevLett.122.237201},
journal = {Physical Review Letters},
number = 23,
volume = 122,
place = {United States},
year = {2019},
month = {6}
}
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