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Toward ferromagnetic semimetal ground state with multiple Weyl nodes in van der Waals crystal MnSb4Te7

التفاصيل البيبلوغرافية
العنوان: Toward ferromagnetic semimetal ground state with multiple Weyl nodes in van der Waals crystal MnSb4Te7
المؤلفون: Jia-Yi Lin, Zhong-Jia Chen, Wen-Qiang Xie, Xiao-Bao Yang, Yu-Jun Zhao
المصدر: New Journal of Physics, Vol 24, Iss 4, p 043033 (2022)
بيانات النشر: IOP Publishing, 2022.
سنة النشر: 2022
المجموعة: LCC:Science
LCC:Physics
مصطلحات موضوعية: first-principles calculations, magnetic phase transition, van der Waals materials, Science, Physics, QC1-999
الوصف: The magnetic topological van der Waals materials family MnBi _2 Te _4 /(Bi _2 Te _3 ) _n have drawn markedly attention due to their novel multiple topological phases in different magnetic configurations. Recently, their close relative, the MnSb _4 Te _7 , was firstly synthesized in experiments (2021 Phys. Rev. Lett. 126 246601). To further explore the emergent properties of MnSb _4 Te _7 , we have systematically investigated the magnetic and topological characters under compressive strain and charge doping using first-principles calculations. We predict that MnSb _4 Te _7 transits from an interlayer antiferromagnetic ground state to a ferromagnetic semimetal ground state with multiple Weyl points when compressive strained along c axis above 8% or charge doping before 0.1 hole/formula concentration. Notable anomalous Hall conductivity is also predicted. Meanwhile, the magnetic easy axis can be reoriented from out-of-plane to in-plane orientation when strain or electron doping is applied. The underlying magnetic exchange mechanism is also analyzed from our calculation results. Our work thus provides a feasible way to realize applications of the highly tunable magnetic-topological nature and a comprehensive theoretical understanding of this magnetic topological material.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1367-2630
Relation: https://doaj.org/toc/1367-2630
DOI: 10.1088/1367-2630/ac6231
URL الوصول: https://doaj.org/article/33ec9f04b7b9460bb0e85669493eff4e
رقم الأكسشن: edsdoj.33ec9f04b7b9460bb0e85669493eff4e
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:13672630
DOI:10.1088/1367-2630/ac6231