Interfacing topological insulators and ferrimagnets: Bi2Te3and Fe3O4heterostructures grown by molecular beam epitaxy

被引：6
|
作者：
Pereira, V. M. [1 ]
Wu, C. N. [1 ,2 ]
Knight, C. -A. [1 ,3 ]
Choa, A. [1 ,3 ]
Tjeng, L. H. [1 ]
Altendorf, S. G. [1 ]
机构：
[1] Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany
[2] Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan
[3] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada
来源：
APL MATERIALS | 2020年 / 8卷 / 07期
关键词：
Magnetite;
D O I：
10.1063/5.0010339
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Relying on the magnetism induced by the proximity effect in heterostructures of topological insulators and magnetic insulators is one of the promising routes to achieve the quantum anomalous Hall effect. Here, we investigate heterostructures of Bi(2)Te(3)and Fe3O4. By growing two different types of heterostructures by molecular beam epitaxy, Fe(3)O(4)on Bi(2)Te(3)and Bi(2)Te(3)on Fe3O4, we explore differences in chemical stability, crystalline quality, electronic structure, and transport properties. We find the heterostructure Bi(2)Te(3)on Fe(3)O(4)to be a more viable approach, with transport signatures in agreement with a gap opening in the topological surface states.
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页数：10
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