Significant Dzyaloshinskii–Moriya interaction at graphene–ferromagnet interfaces due to the Rashba effect
Abstract
We report that the possibility of utilizing the rich spin-dependent properties of graphene has attracted much attention in the pursuit of spintronics advances. The promise of high-speed and low-energy-consumption devices motivates the search for layered structures that stabilize chiral spin textures such as topologically protected skyrmions. Here we demonstrate that chiral spin textures are induced at graphene/ferromagnetic metal interfaces. Graphene is a weak spin-orbit coupling material and is generally not expected to induce a sufficient Dzyaloshinskii-Moriya interaction to affect magnetic chirality. We demonstrate that indeed graphene does induce a type of Dzyaloshinskii-Moriya interaction due to the Rashba effect. First-principles calculations and experiments using spin-polarized electron microscopy show that this graphene-induced Dzyaloshinskii-Moriya interaction can have a similar magnitude to that at interfaces with heavy metals. Lastly, this work paves a path towards two-dimensional-material-based spin-orbitronics.
- Authors:
-
[3];
[4];
[7];
[8];
[5]
- Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, INAC-SPINTEC, Grenoble (France); Université Paris-Saclay, Palaiseau; Chinese Academy of Sciences, Ningbo (China)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Davis, CA (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Centro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo Horizonte (Brazil); Universidade Federal de Minas Gerais, Belo Horizonte (Brazil)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, INAC-SPINTEC, Grenoble (France)
- Universidade Federal de Minas Gerais, Belo Horizonte (Brazil)
- Centro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo Horizonte (Brazil)
- Univ. of California, Davis, CA (United States)
- Université Paris-Saclay, Palaiseau
- 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:
- 1530366
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Materials
- Additional Journal Information:
- Journal Volume: 17; Journal Issue: 7; Journal ID: ISSN 1476-1122
- Publisher:
- Springer Nature - Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Yang, Hongxin, Chen, Gong, Cotta, Alexandre A. C., N’Diaye, Alpha T., Nikolaev, Sergey A., Soares, Edmar A., Macedo, Waldemar A. A., Liu, Kai, Schmid, Andreas K., Fert, Albert, and Chshiev, Mairbek. Significant Dzyaloshinskii–Moriya interaction at graphene–ferromagnet interfaces due to the Rashba effect. United States: N. p., 2018.
Web. doi:10.1038/s41563-018-0079-4.
Yang, Hongxin, Chen, Gong, Cotta, Alexandre A. C., N’Diaye, Alpha T., Nikolaev, Sergey A., Soares, Edmar A., Macedo, Waldemar A. A., Liu, Kai, Schmid, Andreas K., Fert, Albert, & Chshiev, Mairbek. Significant Dzyaloshinskii–Moriya interaction at graphene–ferromagnet interfaces due to the Rashba effect. United States. https://doi.org/10.1038/s41563-018-0079-4
Yang, Hongxin, Chen, Gong, Cotta, Alexandre A. C., N’Diaye, Alpha T., Nikolaev, Sergey A., Soares, Edmar A., Macedo, Waldemar A. A., Liu, Kai, Schmid, Andreas K., Fert, Albert, and Chshiev, Mairbek. Mon .
"Significant Dzyaloshinskii–Moriya interaction at graphene–ferromagnet interfaces due to the Rashba effect". United States. https://doi.org/10.1038/s41563-018-0079-4. https://www.osti.gov/servlets/purl/1530366.
@article{osti_1530366,
title = {Significant Dzyaloshinskii–Moriya interaction at graphene–ferromagnet interfaces due to the Rashba effect},
author = {Yang, Hongxin and Chen, Gong and Cotta, Alexandre A. C. and N’Diaye, Alpha T. and Nikolaev, Sergey A. and Soares, Edmar A. and Macedo, Waldemar A. A. and Liu, Kai and Schmid, Andreas K. and Fert, Albert and Chshiev, Mairbek},
abstractNote = {We report that the possibility of utilizing the rich spin-dependent properties of graphene has attracted much attention in the pursuit of spintronics advances. The promise of high-speed and low-energy-consumption devices motivates the search for layered structures that stabilize chiral spin textures such as topologically protected skyrmions. Here we demonstrate that chiral spin textures are induced at graphene/ferromagnetic metal interfaces. Graphene is a weak spin-orbit coupling material and is generally not expected to induce a sufficient Dzyaloshinskii-Moriya interaction to affect magnetic chirality. We demonstrate that indeed graphene does induce a type of Dzyaloshinskii-Moriya interaction due to the Rashba effect. First-principles calculations and experiments using spin-polarized electron microscopy show that this graphene-induced Dzyaloshinskii-Moriya interaction can have a similar magnitude to that at interfaces with heavy metals. Lastly, this work paves a path towards two-dimensional-material-based spin-orbitronics.},
doi = {10.1038/s41563-018-0079-4},
journal = {Nature Materials},
number = 7,
volume = 17,
place = {United States},
year = {Mon May 28 00:00:00 EDT 2018},
month = {Mon May 28 00:00:00 EDT 2018}
}
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