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author:

Xudong Zhu (Xudong Zhu.) [1] | Yuqian Chen (Yuqian Chen.) [2] | Zheng Liu (Zheng Liu.) [3] | Yulei Han (Yulei Han.) [4] (Scholars:韩玉磊) | Zhenhua Qiao (Zhenhua Qiao.) [5]

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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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  • [ 1 ] [Yulei Han]福州大学
  • [ 2 ] [Zhenhua Qiao]ICQD,Hefei National Research Center for Physical Sciences at the Microscale,University of Science and Technology of China,Hefei 230026,China;CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics,and Department of Physics,University of Science and Technology of China,Hefei 230026,China
  • [ 3 ] [Zheng Liu]ICQD,Hefei National Research Center for Physical Sciences at the Microscale,University of Science and Technology of China,Hefei 230026,China;CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics,and Department of Physics,University of Science and Technology of China,Hefei 230026,China
  • [ 4 ] [Xudong Zhu]ICQD,Hefei National Research Center for Physical Sciences at the Microscale,University of Science and Technology of China,Hefei 230026,China;CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics,and Department of Physics,University of Science and Technology of China,Hefei 230026,China
  • [ 5 ] [Yuqian Chen]ICQD,Hefei National Research Center for Physical Sciences at the Microscale,University of Science and Technology of China,Hefei 230026,China;CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics,and Department of Physics,University of Science and Technology of China,Hefei 230026,China

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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

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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