Experimental Evidence of Chiral Ferrimagnetism in Amorphous GdCo Films
Abstract
Inversion symmetry breaking has become a vital research area in modern magnetism with phenomena including the Rashba effect, spin Hall effect, and the Dzyaloshinskii-Moriya interaction (DMI)-a vector spin exchange. The latter one may stabilize chiral spin textures with topologically nontrivial properties, such as Skyrmions. So far, chiral spin textures have mainly been studied in helimagnets and thin ferromagnets with heavy-element capping. Here, the concept of chirality driven by interfacial DMI is generalized to complex multicomponent systems and demonstrated on the example of chiral ferrimagnetism in amorphous GdCo films. Utilizing Lorentz microscopy and X-ray magnetic circular dichroism spectroscopy, and tailoring thickness, capping, and rare-earth composition, reveal that 2 nm thick GdCo films preserve ferrimagnetism and stabilize chiral domain walls. Finally, the type of chiral domain walls depends on the rare-earth composition/saturation magnetization, enabling a possible temperature control of the intrinsic properties of ferrimagnetic domain walls.
- Authors:
-
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
- Univ. of California, Berkeley, CA (United States). Dept. of Engineering
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division; Univ. of California, Santa Cruz, CA (United States). Dept. of Physics
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1440956
- Alternate Identifier(s):
- OSTI ID: 1438936
- Grant/Contract Number:
- AC02-05CH11231; AC02-05-CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Materials
- Additional Journal Information:
- Journal Volume: 30; Journal Issue: 27; Journal ID: ISSN 0935-9648
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; chiral domain walls; ferrimagnetism; Lorentz microscopy; thin films; X‐ray microspectroscopy
Citation Formats
Streubel, Robert, Lambert, Charles-Henri, Kent, Noah, Ercius, Peter, N'Diaye, Alpha T., Ophus, Colin, Salahuddin, Sayeef, and Fischer, Peter. Experimental Evidence of Chiral Ferrimagnetism in Amorphous GdCo Films. United States: N. p., 2018.
Web. doi:10.1002/adma.201800199.
Streubel, Robert, Lambert, Charles-Henri, Kent, Noah, Ercius, Peter, N'Diaye, Alpha T., Ophus, Colin, Salahuddin, Sayeef, & Fischer, Peter. Experimental Evidence of Chiral Ferrimagnetism in Amorphous GdCo Films. United States. https://doi.org/10.1002/adma.201800199
Streubel, Robert, Lambert, Charles-Henri, Kent, Noah, Ercius, Peter, N'Diaye, Alpha T., Ophus, Colin, Salahuddin, Sayeef, and Fischer, Peter. Wed .
"Experimental Evidence of Chiral Ferrimagnetism in Amorphous GdCo Films". United States. https://doi.org/10.1002/adma.201800199. https://www.osti.gov/servlets/purl/1440956.
@article{osti_1440956,
title = {Experimental Evidence of Chiral Ferrimagnetism in Amorphous GdCo Films},
author = {Streubel, Robert and Lambert, Charles-Henri and Kent, Noah and Ercius, Peter and N'Diaye, Alpha T. and Ophus, Colin and Salahuddin, Sayeef and Fischer, Peter},
abstractNote = {Inversion symmetry breaking has become a vital research area in modern magnetism with phenomena including the Rashba effect, spin Hall effect, and the Dzyaloshinskii-Moriya interaction (DMI)-a vector spin exchange. The latter one may stabilize chiral spin textures with topologically nontrivial properties, such as Skyrmions. So far, chiral spin textures have mainly been studied in helimagnets and thin ferromagnets with heavy-element capping. Here, the concept of chirality driven by interfacial DMI is generalized to complex multicomponent systems and demonstrated on the example of chiral ferrimagnetism in amorphous GdCo films. Utilizing Lorentz microscopy and X-ray magnetic circular dichroism spectroscopy, and tailoring thickness, capping, and rare-earth composition, reveal that 2 nm thick GdCo films preserve ferrimagnetism and stabilize chiral domain walls. Finally, the type of chiral domain walls depends on the rare-earth composition/saturation magnetization, enabling a possible temperature control of the intrinsic properties of ferrimagnetic domain walls.},
doi = {10.1002/adma.201800199},
journal = {Advanced Materials},
number = 27,
volume = 30,
place = {United States},
year = {Wed May 23 00:00:00 EDT 2018},
month = {Wed May 23 00:00:00 EDT 2018}
}
Web of Science
Figures / Tables:
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