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Spectroscopic Identification and Direct Imaging of Interfacial Magnetic Spins
Abstract
Using x-ray absorption spectromicroscopy we have imaged the uncompensated spins induced at the surface of antiferromagnetic (AFM) NiO(100) by deposition of ferromagnetic (FM) Co. These spins align parallel to the AFM spins in NiO(100) and align the FM spins in Co. The uncompensated interfacial spins arise from an ultrathin CoNiOx layer that is formed upon Co deposition through reduction of the NiO surface. The interfacial Ni spins are discussed in terms of the "uncompensated spins" at AFM/FM interfaces long held responsible for coercivity increases and exchange bias. We find a direct correlation between their number and the size of the coercivity.
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Cited by
Exchange bias in nanostructures
Nogués, J., Sort, J., Langlais, V., Skumryev, V., Suriñach, S., Muñoz, J. S., & Baró, M. D. (2005) · Physics Reports · doi:10.1016/j.physrep.2005.08.004 · Cited by 1,925
Zhang, S., Kronast, F., van der Laan, G., & Hesjedal, T. (2018) · Nano Letters · doi:10.1021/acs.nanolett.7b04537 · Cited by 161
Metadata
- Authors
- Ohldag, H., Regan, T. J., Stöhr, J., Scholl, A., Nolting, F., Lüning, J., Stamm, C., Anders, S., & White, R. L.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2001-11-27
- Volume
- 87
- Issue
- 24
- Pages
- 247201-247201
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2140988329
- Cited by
- 240
- References
- 0
- FWCI
- 9.67
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ohldag, H., Regan, T. J., Stöhr, J., Scholl, A., Nolting, F., Lüning, J., Stamm, C., Anders, S., & White, R. L. (2001). Spectroscopic Identification and Direct Imaging of Interfacial Magnetic Spins. Physical Review Letters. https://doi.org/10.1103/physrevlett.87.247201
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