Modulation of ferromagnetism via topological interface coupling in Fe3GaTe2/Bi2Te3 heterojunction

Acta Physica Sinica 2026 Open access

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Authors: CI Wen-Juan, Tianqi Liu, SONG Yan-Li, MA Zhu, WANG Ying, Jianlei Shen, YANG Rui-Long, Wuhong Xue, XU Xiao-Hong
DOI: 10.7498/aps.75.20251620
Cited by: 0
References: 29

Abstract

拓扑异质结的界面相互作用能够通过界面电荷转移、拓扑表面态诱导等有效调节界面磁有序, 为实现高效、低功耗的磁序操纵提供可靠策略. 本文构筑了室温铁磁体Fe3GaTe2与拓扑绝缘体Bi2Te3的全范德华异质结, 探究了Bi2Te3界面相互作用对Fe3GaTe2磁性的影响规律. 通过不同温度下的微观磁畴演变, 表明拓扑界面能够有效稳定Fe3GaTe2的长程磁有序. 磁光测量进一步验证了异质结构中Fe3GaTe2居里温度提升了约20 K, 并观测到异常的MOKE信号反号行为. 本研究揭示了拓扑界面效应在调控二维磁性中的重要作用, 为开发高性能自旋电子器件提供了实验基础.

Fields of Study & Subjects

Magnetic properties of thin films Topological Materials and Phenomena 2D Materials and Applications

Publication details

Journal / source
Acta Physica Sinica
Volume
75
Issue
6
Publication date
1 January 2026