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.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Kunakova G,Meija R,Andzane J,Malinovskis U,Petersons G,Baitimirova M,Bechelany M,Bauch T,Lombardi F,Erts Ddoi
10.1038/s41598-019-47547-0subject
Has Abstractpub_date
2019-08-05 00:00:00pages
11328issue
1issn
2045-2322pii
10.1038/s41598-019-47547-0journal_volume
9pub_type
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