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Local Magnetic Suppression of Topological Surface States in Bi2Te3 Nanowires

Gooth, Johannes; Zierold, Robert; Sergelius, Philip; Hamdou, Bacel; Garcia, Javier; Damm, Christine; Rellinghaus, Bernd; Pettersson, Hakan Jan; Pertsova, Anna and Canali, Carlo LU , et al. (2016) In ACS Nano 10(7). p.7180-7188
Abstract

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.

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publishing date
type
Contribution to journal
publication status
published
subject
keywords
1D confinement, magnetism, nanowire, surface, topological insulator
in
ACS Nano
volume
10
issue
7
pages
9 pages
publisher
The American Chemical Society
external identifiers
  • Scopus:84979873036
ISSN
1936-0851
DOI
10.1021/acsnano.6b03537
language
English
LU publication?
no
id
e281b438-3b49-4eaf-b979-4115c315c4ee
date added to LUP
2016-08-26 08:46:39
date last changed
2016-09-16 15:06:28
@misc{e281b438-3b49-4eaf-b979-4115c315c4ee,
  abstract     = {<p>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 Bi<sub>2</sub>Te<sub>3</sub> nanowire via a magnetic insulating Fe<sub>3</sub>O<sub>4</sub> 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.</p>},
  author       = {Gooth, Johannes and Zierold, Robert and Sergelius, Philip and Hamdou, Bacel and Garcia, Javier and Damm, Christine and Rellinghaus, Bernd and Pettersson, Hakan Jan and Pertsova, Anna and Canali, Carlo and Borg, Mattias and Nielsch, Kornelius},
  issn         = {1936-0851},
  keyword      = {1D confinement,magnetism,nanowire,surface,topological insulator},
  language     = {eng},
  month        = {07},
  number       = {7},
  pages        = {7180--7188},
  publisher    = {ARRAY(0xbac04f0)},
  series       = {ACS Nano},
  title        = {Local Magnetic Suppression of Topological Surface States in Bi<sub>2</sub>Te<sub>3</sub> Nanowires},
  url          = {http://dx.doi.org/10.1021/acsnano.6b03537},
  volume       = {10},
  year         = {2016},
}