Anomalous Hall effect in Nd-doped Bi1.1Sb0.9STe2 topological insulator single crystals

被引：1

作者：

Chen, Lei ^{[1
]}

Zhao, Weiyao ^{[2
,3
]}

Xing, Kaijian ^{[4
]}

You, Mengyun ^{[5
,6
]}

Wang, Xiaolin ^{[5
,6
]}

Zheng, Ren-Kui ^{[1
]}

机构：

[1] Guangzhou Univ, Sch Phys & Mat Sci, Guangzhou 510006, Peoples R China

[2] Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia

[3] Monash Univ, ARC Ctr Excellence Future Low Energy Elect Techno, Clayton, Vic 3800, Australia

[4] Monash Univ, Sch Phys & Astron, Clayton, Vic 3800, Australia

[5] Univ Wollongong, Inst Superconducting & Elect Mat, Innovat Campus, Wollongong, NSW 2500, Australia

[6] Univ Wollongong, ARC Ctr Excellence Future Low Energy Elect Techno, Innovat Campus, Wollongong, NSW 2500, Australia

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2024年 / 26卷 / 03期

基金：

中国国家自然科学基金;

关键词：

SURFACE;

D O I：

10.1039/d3cp05850f

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Topological insulators are emerging materials with insulating bulk and symmetry protected nontrivial surface states. One of the most fascinating transport behaviors in a topological insulator is the quantum anomalous Hall effect, which has been observed in magnetic-topological-insulator-based devices. In this work, we report successful doping of rare-earth element Nd into Bi1.1Sb0.9STe2 bulk-insulating topological insulator single crystals, in which the Nd moments are ferromagnetically ordered at similar to 100 K. Benefiting from the in-bulk-gap Fermi level, electronic transport behaviors dominated by the topological surface states are observed in the ferromagnetic region. At low temperatures, strong Shubnikov-de Haas oscillations with a nontrivial Berry phase are observed. The topological insulator with long range magnetic ordering in Nd-doped Bi1.1Sb0.9STe2 single crystals provides a good platform for quantum transport studies and spintronic applications.

引用

页码：2638 / 2645

页数：8

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