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Signatures of Majorana Fermions in Hybrid Superconductor-Semiconductor Nanowire Devices.
MedLine Citation:
PMID:  22499805     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Majorana fermions are particles identical to their own antiparticles. They have been theoretically predicted to exist in topological superconductors. We report electrical measurements on InSb nanowires contacted with one normal (Au) and one superconducting electrode (NbTiN). Gate voltages vary electron density and define a tunnel barrier between normal and superconducting contacts. In the presence of magnetic fields of order 100 mT, we observe bound, mid-gap states at zero bias voltage. These bound states remain fixed to zero bias even when magnetic fields and gate voltages are changed over considerable ranges. Our observations support the hypothesis of Majorana fermions in nanowires coupled to superconductors.
Authors:
V Mourik; K Zuo; S M Frolov; S R Plissard; E P A M Bakkers; L P Kouwenhoven
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-12
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  -     ISSN:  1095-9203     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, Netherlands.
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