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arXiv · 2109.11836

B20-MnSi films grown on Si(100) substrates with magnetic skyrmion signature

Zichao Li·Ye Yuan·René Hübner·Viktor Begeza·Thomas Naumann·Lars Rebohle·Olav Hellwig·Manfred Helm·Kornelius Nielsch·Slawomir Prucnal·Shengqiang Zhou
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Abstract

Magnetic skyrmions have been suggested as information carriers for future spintronic devices. As the first material with experimentally confirmed skyrmions, B20-type MnSi was the research focus for decades. Although B20-MnSi films have been successfully grown on Si(111) substrates, there is no report about B20-MnSi films on Si(100) substrates, which would be more preferred for practical applications. In this letter, we present the first preparation of B20-MnSi on Si(100) substrates. It is realized by sub-second solid-state reaction between Mn and Si via flash-lamp annealing at ambient pressure. The regrown layer shows an enhanced Curie temperature of 43 K compared with bulk B20-MnSi. The magnetic skyrmion signature is proved in our films by magnetic and transport measurements. The millisecond-range flash annealing provides a promising avenue for the fabrication of Si-based skyrmionic devices.

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Zichao Li, Ye Yuan, René Hübner, Viktor Begeza, Thomas Naumann, Lars Rebohle, Olav Hellwig, Manfred Helm, Kornelius Nielsch, Slawomir Prucnal, Shengqiang Zhou. 2021-09-24. B20-MnSi films grown on Si(100) substrates with magnetic skyrmion signature. https://arxiv.org/abs/2109.11836

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