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

doi:10.1063/5.0021125

AIP Advances (Nov 2020)

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

DOI: https://doi.org/10.1063/5.0021125
Journal volume & issue: Vol. 10, no. 11
pp. 115202 – 115202-7

Abstract

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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.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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