Local Magnetic Suppression of Topological Surface States in Bi 2 Te 3 Nanowires

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 2 Te 3 nanowire via a m...

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Bibliographic Details
Published in:	ACS nano Vol. 10; no. 7; pp. 7180 - 7188
Main Authors:	Gooth, Johannes, Zierold, Robert, Sergelius, Philip, Hamdou, Bacel, Garcia, Javier, Damm, Christine, Rellinghaus, Bernd, Pettersson, Håkan Jan, Pertsova, Anna, Canali, Carlo, Borg, Mattias, Nielsch, Kornelius
Format:	Journal Article
Language:	English
Published:	2016
Subjects:	1D confinement Fysik magnetism nanowire Physics surface topological insulator
Online Access:	Get full text
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Summary:	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 2 Te 3 nanowire via a magnetic insulating Fe 3 O 4 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. © 2016 American Chemical Society.
ISSN:	1936-0851 1936-086X 1936-086X
DOI:	10.1021/acsnano.6b03537