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Synthesis and quantum transport properties of Bi?Se? topological insulator nanostructures.

ABSTRACT: Bi?Se? nanocrystals with various morphologies, including nanotower, nanoplate, nanoflake, nanobeam and nanowire, have been synthesized. Well-distinguished Shubnikov-de Haas (SdH) oscillations were observed in Bi?Se? nanoplates and nanobeams. Careful analysis of the SdH oscillations suggests the existence of Berry's phase ?, which confirms the quantum transport of the surface Dirac fermions in both Bi?Se? nanoplates and nanobeams without intended doping. The observation of the singular quantum transport of the topological surface states implies that the high-quality Bi?Se? nanostructures have superiorities for investigating the novel physical properties and developing the potential applications.

SUBMITTER: Yan Y

PROVIDER: S-EPMC3569629 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Synthesis and quantum transport properties of Bi₂Se₃ topological insulator nanostructures.

Yan Yuan Y Liao Zhi-Min ZM Zhou Yang-Bo YB Wu Han-Chun HC Bie Ya-Qing YQ Chen Jing-Jing JJ Meng Jie J Wu Xiao-Song XS Yu Da-Peng DP

Scientific reports 20130212

Bi₂Se₃ nanocrystals with various morphologies, including nanotower, nanoplate, nanoflake, nanobeam and nanowire, have been synthesized. Well-distinguished Shubnikov-de Haas (SdH) oscillations were observed in Bi₂Se₃ nanoplates and nanobeams. Careful analysis of the SdH oscillations suggests the existence of Berry's phase π, which confirms the quantum transport of the surface Dirac fermions in both Bi₂Se₃ nanoplates and nanobeams without intended doping. The observation of the singular quantum tr ...[more]

PMID: 23405278

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