In:
Chinese Physics Letters, IOP Publishing, Vol. 37, No. 7 ( 2020-06-01), p. 077502-
Abstract:
Two-dimensional (2D) ferromagnetic materials have been exhibiting promising potential in applications, such as spintronics devices. To grow epitaxial magnetic films on silicon substrate, in the single-layer limit, is practically important but challenging. In this study, we realized the epitaxial growth of MnSn monolayer on Si(111) substrate, with an atomically thin Sn/Si(111)- 2 3 × 2 3 -buffer layer, and controlled the MnSn thickness with atomic-layer precision. We discovered the ferromagnetism in MnSn monolayer with the Curie temperature ( T c ) of ∼ 54 K. As the MnSn film is grown to 4 monolayers, T c increases accordingly to ∼ 235 K. The lattice of the epitaxial MnSn monolayer as well as the Sn/Si(111)- 2 3 × 2 3 is perfectly compatible with silicon, and thus an sharp interface is formed between MnSn, Sn and Si. This system provides a new platform for exploring the 2D ferromagnetism, integrating magnetic monolayers into silicon-based technology, and engineering the spintronics heterostructures.
Type of Medium:
Online Resource
ISSN:
0256-307X
,
1741-3540
DOI:
10.1088/0256-307X/37/7/077502
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2020
detail.hit.zdb_id:
2040565-0
SSG:
6,25
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