Surface structure promoted high-yield growth and magnetotransport properties of Bi2Se3 nanoribbons

Gunta Kunakova, Raimonds Meija, Jana Andzane, Uldis Malinovskis, Gvido Petersons, Margarita Baitimirova, Mikhael Bechelany, Thilo Bauch, Floriana Lombardi, Donats Erts

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In the present work, a catalyst-free physical vapour deposition method is used to synthesize high yield of Bi2Se3 nanoribbons. By replacing standard glass or quartz substrates with aluminium covered with ultrathin porous anodized aluminium oxide (AAO), the number of synthesized nanoribbons per unit area can be increased by 20–100 times. The mechanisms of formation and yield of the nanoribbons synthesized on AAO substrates having different arrangement and size of pores are analysed and discussed. It is shown that the yield and average length of the nanoribbons can base tuned by adjustment of the synthesis parameters. Analysis of magnetotransport measurements for the individual Bi2Se3 nanoribbons transferred on a Si/SiO2 substrate show the presence of three different populations of charge carriers, originating from the Dirac surface states, bulk carriers and carriers from a trivial 2DEG from an accumulation layer at the Bi2Se3 nanoribbon interface with the substrate.

Original languageEnglish
Article number11328
JournalScientific Reports
Volume9
Issue number1
DOIs
Publication statusPublished - 1 Dec 2019
Externally publishedYes

Field of Science

  • 1.3 Physical sciences

Publication Type

  • 1.1. Scientific article indexed in Web of Science and/or Scopus database

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