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Local Magnetic Suppression of Topological Surface States in Bi2Te3 Nanowires

Gooth, Johannes (author)
Institute of Nanostructure and Solid State Physics, Universität Hamburg, Hamburg, Germany & IBM Research-Zurich, Rüschlikon, Switzerland
Zierold, Robert (author)
Institute of Nanostructure and Solid State Physics, Universität Hamburg, Hamburg, Germany
Sergelius, Philip (author)
Institute of Nanostructure and Solid State Physics, Universität Hamburg, Hamburg, Germany
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Hamdou, Bacel (author)
Institute of Nanostructure and Solid State Physics, Universität Hamburg, Hamburg, Germany
Garcia, Javier (author)
Institute for Metallic Materials, IFW Dresden, Dresden, Germany
Damm, Christine (author)
Institute for Metallic Materials, IFW Dresden, Dresden, Germany
Rellinghaus, Bernd (author)
Institute for Metallic Materials, IFW Dresden, Dresden, Germany
Pettersson, Håkan, 1962- (author)
Högskolan i Halmstad,Tillämpad matematik och fysik (MPE-lab),Division of Solid State Physics and NanoLund, Lund University, Lund, Sweden,Nanovetenskap
Pertsova, Anna (author)
Linnéuniversitetet,Institutionen för fysik och elektroteknik (IFE),Department of Physics and Electrical Engineering, Linnaeus University, Kalmar, Sweden
Canali, Carlo M. (author)
Linnéuniversitetet,Institutionen för fysik och elektroteknik (IFE),Department of Physics and Electrical Engineering, Linnaeus University, Kalmar, Sweden
Borg, Mattias (author)
IBM Research-Zurich, Rüschlikon, Switzerland
Nielsch, Kornelius (author)
Institute of Nanostructure and Solid State Physics, Universität Hamburg, Hamburg, Germany & Institute for Metallic Materials, IFW Dresden, Dresden, Germany
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 (creator_code:org_t)
2016-07-05
2016
English.
In: ACS Nano. - Washington : American Chemical Society (ACS). - 1936-0851 .- 1936-086X. ; 10:7, s. 7180-7188
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Locally induced, magnetic order on the surface of a topological insulator nanowire could enable room-temperature topological quantum devices. Here we report on the realization of selective magnetic control over topological surface states on a single facet of a rectangular Bi2Te3 nanowire via a magnetic insulating Fe3O4 substrate. Low-temperature magnetotransport studies provide evidence for local time-reversal symmetry breaking and for enhanced gapping of the interfacial 1D energy spectrum by perpendicular magnetic-field components, leaving the remaining nanowire facets unaffected. Our results open up great opportunities for development of dissipation-less electronics and spintronics.

Subject headings

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

Keyword

1D confinement
magnetism
nanowire
surface
topological insulator
Fysik
Physics

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