journal article·2021-01

Magnetic Moments Induced by Atomic Vacancies in Transition Metal Dichalcogenide Flakes

Jun Ge, Tianchuang Luo, Zuzhang Lin, Jianping Shi, Yanzhao Liu, Pinyuan Wang, Yanfeng Zhang, Wenhui Duan, Jian Wang

Advanced Materials· Volume 33· Issue 4
Publisher page

Abstract

Abstract 2D magnetism plays a key role in both fundamental physics and potential device applications. However, the instability of the discovered 2D magnetic materials has been one main obstacle in deep research and potential application of 2D magnetism. Here, a localized magnetic moment induced by Pt vacancies in air‐stable type‐II Dirac semimetal PtSe2 flakes is reported. The localized magnetic moments give rise to the Kondo effect, evidenced by logarithmic increment of resistance with decreasing temperature and isotropic negative longitudinal magnetoresistance. Additionally, the induced magnetic moment and Kondo temperature appear to depend on thickness in the thinner samples (<10 nm). The small magnetocrystalline anisotropy revealed by first‐principles calculation indicates that the magnetic moments are randomly localized instead of long‐range ordered. The findings demonstrate a new means to induce magnetism in 2D non‐magnetic materials.
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Research context

OpenAlex topics: 2D Materials and Applications · Topological Materials and Phenomena · Graphene research and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

International Center for Quantum Materials School of Physics Peking University Beijing 100871 China

State Key Laboratory of Low Dimensional Quantum Physics Department of Physics Tsinghua University Beijing 100084 China

Institute for Advanced Study Tsinghua University Beijing 100084 China

The Institute for Advanced Studies Wuhan University Wuhan 430072 China

Department of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China

CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of Sciences Beijing 100190 China

Beijing Academy of Quantum Information Sciences Beijing 100193 China

Funding

National Basic Research Program of China · National Natural Science Foundation of China · Natural Science Foundation of Beijing Municipality · State Key Laboratory of Low-Dimensional Quantum Physics · Tsinghua University · Beijing Innovation Center for Future Chip

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