Magnetic coupling and exchange stiffness in striped MnAs films
| Autor: | Lutz Däweritz, K. Baberschke, C. Pampuch, Thorsten Hesjedal, Reinhold Koch, Andreas Ney, Kilian Lenz, K. H. Ploog, T. Toliński, Jürgen Lindner |
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| Rok vydání: | 2004 |
| Předmět: |
Materials science
Condensed matter physics Direct evidence General Physics and Astronomy Resonance Stiffness Inductive coupling Ferromagnetic resonance Condensed Matter::Materials Science Paramagnetism Ferromagnetism Spin wave Condensed Matter::Superconductivity medicine Condensed Matter::Strongly Correlated Electrons medicine.symptom |
| Zdroj: | Europhysics Letters (EPL). 68:726-732 |
| ISSN: | 1286-4854 0295-5075 |
| Popis: | We provide the first direct evidence of interactions in a self-organized pattern of coexisting ferromagnetic and paramagnetic MnAs stripe domains as a function of the coupling strength between the stripes (inter) and within one stripe (intra). The value of the intra exchange constant A = 17.7 × 10−10 erg/cm is determined unambiguously from spin wave resonance. Additionally, in-plane ferromagnetic resonance measurements reveal the presence of a strong coupling between the neighboring stripes, which can dominate the weak intra-stripe interaction. |
| Databáze: | OpenAIRE |
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