首页|Relationship between disorder,magnetism and band topology in Mn(Sb1-xBix)2Te4 single crystals

Relationship between disorder,magnetism and band topology in Mn(Sb1-xBix)2Te4 single crystals

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We investigate the evolution of magnetic properties as well as the content and distribution of Mn for Mn(Sb1-xBix)2Te4 single crystals grown by large-temperature-gradient chemical vapor transport method.It is found that the ferromagnetic MnSb2Te4 changes to antiferromagnetism with Bi doping when x ≥ 0.25.Further analysis implies that the occupations of Mn ions at Sb/Bi site Mnsb/Bi and Mn site MnMn have a strong influence on the magnetic ground states of these systems.With the decrease of MnMn and increase of MnSb/Bi,the system will favor the ferromagnetic ground state.In addition,the rapid decrease of TC/N with increasing Bi content when x ≤ 0.25 and the insensitivity of TN to x when x ≥ 0.25 suggest that the main magnetic interaction may change from the Ruderman-Kittel-Kasuya-Yosida type at low Bi doping region to the van-Vleck type in high Bi doped samples.

magnetic topological insulatormagnetic propertiesantisite defectschemical vapor transport

席明、雷和畅

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Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices,Renmin University of China,Beijing 100872,China

Key Laboratory of Quantum State Construction and Manipulation(Ministry of Education),Renmin University of China,Beijing 100872,China

北京市自然科学基金国家重点研发计划国家重点研发计划国家自然科学基金Collaborative Research Project of Laboratory for Materials and Structures,Institute of Innovative Research,Tokyo Institute of Te

Z2000052022YFA14038002023YFA140650012274459

2024

10.1088/1674-1056/ad3dd8

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(6)
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