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| LEADER |
01926nam a2200361Ia 4500 |
| 001 |
10.1063-5.0080523 |
| 008 |
220510s2022 CNT 000 0 und d |
| 020 |
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|a 00218979 (ISSN)
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| 245 |
1 |
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|a Tuning of the Dzyaloshinskii-Moriya interaction by He+ion irradiation
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| 260 |
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|b American Institute of Physics Inc.
|c 2022
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| 856 |
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|z View Fulltext in Publisher
|u https://doi.org/10.1063/5.0080523
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|a We studied the impact of He+ irradiation on the Dzyaloshinskii-Moriya interaction (DMI) in Ta/Co20Fe60B20/Pt/MgO samples. We found that irradiation of 40 keV He+ ions increases the DMI by approximately 20% for fluences up to 2 × 1016 ions/cm2 before it decreases for higher fluence values. In contrast, the interfacial anisotropy shows a distinctly different fluence dependence. To better understand the impact of the ion irradiation on the Ta and Pt interfaces with the Co20Fe60B20 layer, we carried out Monte-Carlo simulations, which showed an expected increase in disorder at the interfaces. A moderate increase in disorder increases the total number of triplets for the three-site exchange mechanism and consequently increases the DMI. Our results demonstrate the significance of disorder for the total DMI. © 2022 Author(s).
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|a Boron compounds
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|a Cobalt compounds
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|a Dzyaloshinskii-Moriya interaction
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4 |
|a Exchange mechanism
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|a Fluence dependence
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| 650 |
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|a Fluences
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4 |
|a Intelligent systems
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4 |
|a Ion bombardment
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4 |
|a Ions
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|a Ions irradiation
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|a Iron compounds
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| 650 |
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4 |
|a Monte Carlo methods
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4 |
|a Platinum
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| 650 |
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4 |
|a Site exchange
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1 |
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|a Fassbender, J.
|e author
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| 700 |
1 |
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|a Jué, E.
|e author
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1 |
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|a Nembach, H.T.
|e author
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1 |
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|a Poetzger, K.
|e author
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1 |
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|a Shaw, J.M.
|e author
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1 |
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|a Silva, T.J.
|e author
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| 773 |
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|t Journal of Applied Physics
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