Magnetic proximity effects in topological insulator heterostructures: Implementation and characterization

被引：18

作者：

Grutter, A. J. ^{[1
]}

He, Q. L. ^{[2
,3
,4
]}

机构：

[1] Natl Inst Stand & Technol, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA

[2] Peking Univ, Int Ctr Quantum Mat, Beijing 100871, Peoples R China

[3] Peking Univ, Interdisciplinary Inst Light Element Quantum Mat, Beijing 100871, Peoples R China

[4] Peking Univ, Res Ctr Light Element Adv Mat, Beijing 100871, Peoples R China

来源：

PHYSICAL REVIEW MATERIALS | 2021年 / 5卷 / 09期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

RAY-ABSORPTION-SPECTROSCOPY; NEUTRON-DIFFRACTION; EXPERIMENTAL REALIZATION; MEDIATED FERROMAGNETISM; DIRAC SEMIMETAL; THIN-FILM; SURFACE; PHASE; SCATTERING; DEPTH;

D O I：

10.1103/PhysRevMaterials.5.090301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this progress report, we examine recent efforts towards the introduction of magnetic order into topologically nontrivial systems through magnetic proximity effects, with a particular emphasis on the methods of characterizing magnetization induced at the interface. We focus on the challenges associated with comparing magneto-transport measurements with magnetic scattering and spectroscopy techniques, considering the limitations and potential artifacts associated with topological insulator heterostructures. Taking the (Bi, Sb)2(Se, Te) 3 family of three-dimensional topological insulators as an example, we discuss the results associated with a wide range of magnetically ordered reservoirs and highlight the wide discrepancies in reported magnetic proximity effect strengths detected using different characterization techniques. Finally, we discuss the outlook of magnetic proximity effects in topological insulator heterostructures as a route towards a higher-temperature quantum anomalous Hall effect.

引用

页数：21

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