{"title":"Constructing topological insulator-ferromagnet heterojunctions of Bi<sub>2</sub>Se<sub>3</sub>/Fe<sub>3</sub>GeTe<sub>2</sub>and Bi<sub>2</sub>Te<sub>3</sub>/Fe<sub>3</sub>GaTe<sub>2</sub>.","authors":"Xinke Liang, Fuhong Chen, Liu Yang, Tingting Yang, Peiyao Xiao, Yuxiang Liu, Zhiwei Wang, Wende Xiao","doi":"10.1088/1361-648X/adb274","DOIUrl":null,"url":null,"abstract":"<p><p>Heterostructures composed of topological insulators and ferromagnets are predicted to exhibit the quantum anomalous Hall effect (QAHE). The morphology and interfacial structure have a significant impact on physical properties and transport performances of such heterostructures. Here, we report the epitaxial growth of topological insulators Bi<sub>2</sub>Se<sub>3</sub>and Bi<sub>2</sub>Te<sub>3</sub>thin films on ferromagnetic substrates of Fe<sub>3</sub>GeTe<sub>2</sub>and Fe<sub>3</sub>GaTe<sub>2</sub>, respectively. The morphology and composition of the Bi<sub>2</sub>Se<sub>3</sub>and Bi<sub>2</sub>Te<sub>3</sub>thin films were characterized using atomic force microscopy, x-ray photoelectron spectroscopy and Raman spectroscopy. After optimizing growth parameters, we successfully generated large-area films with high crystallinity, presenting new types of topological insulator-ferromagnet heterojunctions for the pursuit of QAHE.</p>","PeriodicalId":16776,"journal":{"name":"Journal of Physics: Condensed Matter","volume":" ","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Physics: Condensed Matter","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1088/1361-648X/adb274","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
引用次数: 0
Abstract
Heterostructures composed of topological insulators and ferromagnets are predicted to exhibit the quantum anomalous Hall effect (QAHE). The morphology and interfacial structure have a significant impact on physical properties and transport performances of such heterostructures. Here, we report the epitaxial growth of topological insulators Bi2Se3and Bi2Te3thin films on ferromagnetic substrates of Fe3GeTe2and Fe3GaTe2, respectively. The morphology and composition of the Bi2Se3and Bi2Te3thin films were characterized using atomic force microscopy, x-ray photoelectron spectroscopy and Raman spectroscopy. After optimizing growth parameters, we successfully generated large-area films with high crystallinity, presenting new types of topological insulator-ferromagnet heterojunctions for the pursuit of QAHE.
期刊介绍：
Journal of Physics: Condensed Matter covers the whole of condensed matter physics including soft condensed matter and nanostructures. Papers may report experimental, theoretical and simulation studies. Note that papers must contain fundamental condensed matter science: papers reporting methods of materials preparation or properties of materials without novel condensed matter content will not be accepted.
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