Indentation fracture toughness of single-crystal Bi2Te3 topological insulators

作     者：Caterina Lamuta Anna Cupolillo Antonio Politano Ziya S. Aliev Mahammad B. Babanly Evgueni V. Chulkov Leonardo Pagnotta 

作者机构：Department of Mechanical Energy and Management Engineering University ofCalabria Ponte P Bucci Cuba 44C 87036 Rende Italy Department of Physics University of Calabria Ponte P Bucci Cuba 31 C 87036 Rende Italy Institute of Catalysis and Inorganic Chemistry ANAS AZ1143 Baku Azerbaijian Institute of Physics ANAS AZ1143 Baku Azerbaijian Donostia International Physics Center (DIPC) Paseo de Manuel Lardizabal 4 20018 San Sebastian/Donostia Spain Departamento de Fisica de Materiales Universidad del Pals Vasco Apartado 1072 20080 San Sebastidn/Donostia Spain Centro de Fisica de Materiales CFM-Materials Physics Center MPC Centro Mixto CSIC-UPV/EHU Paseo de Manuel Lardizabal 5 20018 San Sebastion/Donostia Spain Saint Petersburg State University 198504 Saint Petersburg Russian Federation Tomsk State University 634050 Tomsk Russian Federation 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2016年第9卷第4期

页      面：1032-1042页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：funding from PON MaTeRiA funding from the University of Basque Country UPV/EHU the Departamento de Educacion del Gobierno Vasco, the Tomsk State University Academic D. I. Mendeleev Fund Program the Spanish Ministry of Economy and Competitiveness MINECO Saint Petersburg State University 

主　　题：topological insulators bismuth telluride (Bi2Te3) fracture toughness nanoindentation 

摘      要：Bismuth teUuride （Bi2Te3） is one of the most important commercial thermoelectric materials. In recent years, the discovery of topologically protected surface states in Bi chalcogenides has paved the way for their application in nanoelectronics. Determination of the fracture toughness plays a crucial role for the potential application of topological insulators in flexible electronics and nanoelectro- mechanical devices. Using depth-sensing nanoindentation tests, we investigated for the first time the fracture toughness of bulk single crystals of Bi2Te3 topological insulators, grown using the Bridgmantockbarger method. Our results highlight one of the possible pitfalls of the technology based on topological insulators.