Antiferromagnetic Interlayer Exchange Coupling across an Amorphous Metallic Spacer Layer
| Autor: | C. M. Schmidt, D. M. Schaller, H.-J. Güntherodt, Alex Hubert, F. Meisinger, Jeffrey McCord, D. Bürgler, Johann Kroha |
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| Rok vydání: | 1998 |
| Předmět: |
RKKY interaction
Materials science Kerr effect Condensed matter physics Condensed Matter (cond-mat) FOS: Physical sciences Physics::Optics General Physics and Astronomy Condensed Matter Condensed Matter::Mesoscopic Systems and Quantum Hall Effect law.invention Amorphous solid Coupling (electronics) Condensed Matter::Materials Science Ferromagnetism law Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Scanning tunneling microscope Layer (electronics) |
| Zdroj: | Physical Review Letters. 80:4983-4986 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.80.4983 |
| Popis: | By means of magneto-optical Kerr effect we observe for the first time antiferromagnetic coupling between ferromagnetic layers across an amorphous metallic spacer layer. Biquadratic coupling occurs at the transition from a ferromagnetically to an antiferromagnetically coupled region. Scanning tunneling microscopy images of all involved layers are used to extract thickness fluctuations and to verify the amorphous state of the spacer. The observed antiferromagnetic coupling behavior is explained by RKKY interaction taking into account the amorphous structure of the spacer material. Typset using RevTex, 4 pages with 4 figures (.eps) |
| Databáze: | OpenAIRE |
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