Temperature-dependent growth of topological insulator Bi2Se3 for nanoscale fabrication
Muhammad Naveed,
Zixiu Cai,
Haijun Bu,
Fucong Fei,
Syed Adil Shah,
Bo Chen,
Azizur Rahman,
Kangkang Zhang,
Faji Xie,
Fengqi Song
Affiliations
Muhammad Naveed
National Laboratory of Solid-State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and College of Physics, Nanjing University, Nanjing 210093, China
Zixiu Cai
School of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
Haijun Bu
National Laboratory of Solid-State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and College of Physics, Nanjing University, Nanjing 210093, China
Fucong Fei
National Laboratory of Solid-State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and College of Physics, Nanjing University, Nanjing 210093, China
Syed Adil Shah
National Laboratory of Solid-State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and College of Physics, Nanjing University, Nanjing 210093, China
Bo Chen
National Laboratory of Solid-State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and College of Physics, Nanjing University, Nanjing 210093, China
Azizur Rahman
High Magnetic Field Laboratory, Chinese Academy of Science, Hefei, 230031 Anhui, China
Kangkang Zhang
National Laboratory of Solid-State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and College of Physics, Nanjing University, Nanjing 210093, China
Faji Xie
National Laboratory of Solid-State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and College of Physics, Nanjing University, Nanjing 210093, China
Fengqi Song
National Laboratory of Solid-State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and College of Physics, Nanjing University, Nanjing 210093, China
Topological insulators and their characteristics are among the most highly studied areas in condensed matter physics. Bi2Se3 nanocrystals were synthesized via chemical vapor deposition at different temperatures on a silicon substrate with a gold catalyst. The effects of temperature on the obtained Bi2Se3 nanocrystals were systematically investigated. The size and length of Bi2Se3 nanocrystals change when the temperature increases from 500 °C to 600 °C. We found that the crystallization quality of the Bi2Se3 nanocrystals synthesized at 560 °C is optimal. At this temperature, we can get the desired thickness and length of the nanocrystals, which is quite suitable for nanoscale fabrication.
