Surface structure promoted high-yield growth and magnetotransport properties of Bi2Se3 nanoribbons
Journal article, 2019

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.

Author

Gunta Kunakova

University of Latvia

Raimonds Meija

University of Latvia

Jana Andzane

University of Latvia

Uldis Malinovskis

University of Latvia

Gvido Petersons

University of Latvia

Margarita Baitimirova

University of Latvia

Mikhael Bechelany

University of Montpellier

Thilo Bauch

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Floriana Lombardi

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Donats Erts

University of Latvia

Scientific Reports

2045-2322 (ISSN)

Vol. 9 1 11328

High Frequency Topological Insulator devices for Metrology (HiTIMe)

European Commission (Horizon 2020), 2018-02-01 -- 2022-01-31.

Subject Categories

Inorganic Chemistry

Materials Chemistry

Organic Chemistry

DOI

10.1038/s41598-019-47547-0

PubMed

31383870

More information

Latest update

10/7/2019