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Abstract:
We numerically study the general valley polarization and anomalous Hall effect in van der Waals(vdW)heterostructures based on monolayer jacutingaite family materials Pt2AX3(A=Hg,Cd,Zn;X=S,Se,Te).We perform a systematic study on the atomic,electronic,and topological prop-erties of vdW heterostructures composed of monolayer Pt2AX3 and two-dimensional ferromagnetic insulators.We show that four kinds of vdW heterostructures exhibit valley-polarized quantum anomalous Hall phase,i.e.,Pt2HgS3/NiBr2,Pt2HgSe3/CoBr2,Pt2HgSe3/NiBr2,and Pt2ZnS3/CoBr2,with a maximum valley splitting of 134.2 meV in Pt2HgSe3/NiBr2 and sizable global band gap of 58.8 meV in Pt2HgS3/NiBr2.Our findings demonstrate an ideal platform to implement applications on topological valleytronics.
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物理学前沿
ISSN: 2095-0462
CN: 11-5994/O4
Year: 2023
Issue: 2
Volume: 18
Page: 213-224
6 . 5
JCR@2023
6 . 5 0 0
JCR@2023
ESI Discipline: PHYSICS;
ESI HC Threshold:30
JCR Journal Grade:1
CAS Journal Grade:2
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 3
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