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Growth of Quantum Well Films of Topological Insulator Bi 2 Se 3 on Insulating Substrate

  • Cui Zu Chang
  • , K. E. He
  • , Li Li Wang
  • , Xu Cun Ma
  • , Min Hao Liu
  • , Zuo Cheng Zhang
  • , X. I. Chen
  • , Ya Yu Wang
  • , Qi Kun Xue

Research output: Contribution to journalArticlepeer-review

Abstract

Insulating substrates are crucial for electrical transport study and room-temperature application of topological insulator films at thickness of only several nanometers. High-quality quantum well films of Bi2Se3, a typical three-dimensional topological insulator, have been grown on α-Al2O3 (sapphire) (0001) by molecular beam epitaxy. The films exhibit well-defined quantum well states and surface states, suggesting the uniform thickness over macroscopic area. The Bi2Se3 thin films on sapphire (0001) provide a good system to study low-dimensional physics of topological insulators since conduction contribution from the substrate is negligibly small.

Original languageEnglish (US)
Pages (from-to)21-25
Number of pages5
JournalSPIN
Volume1
Issue number1
DOIs
StatePublished - Jun 1 2011

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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