Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices.
Identifieur interne : 000A85 ( Main/Exploration ); précédent : 000A84; suivant : 000A86Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices.
Auteurs : RBID : pubmed:22499805Abstract
Majorana fermions are particles identical to their own antiparticles. They have been theoretically predicted to exist in topological superconductors. Here, we report electrical measurements on indium antimonide nanowires contacted with one normal (gold) and one superconducting (niobium titanium nitride) electrode. Gate voltages vary electron density and define a tunnel barrier between normal and superconducting contacts. In the presence of magnetic fields on the order of 100 millitesla, we observe bound, midgap 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.
DOI: 10.1126/science.1222360
PubMed: 22499805
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices.</title><author><name sortKey="Mourik, V" uniqKey="Mourik V">V Mourik</name><affiliation wicri:level="1"><nlm:affiliation>Kavli Institute of Nanoscience, Delft University of Technology, Delft, Netherlands.</nlm:affiliation><country xml:lang="fr">Pays-Bas</country><wicri:regionArea>Kavli Institute of Nanoscience, Delft University of Technology, Delft</wicri:regionArea></affiliation></author><author><name sortKey="Zuo, K" uniqKey="Zuo K">K Zuo</name></author><author><name sortKey="Frolov, S M" uniqKey="Frolov S">S M Frolov</name></author><author><name sortKey="Plissard, S R" uniqKey="Plissard S">S R Plissard</name></author><author><name sortKey="Bakkers, E P A M" uniqKey="Bakkers E">E P A M Bakkers</name></author><author><name sortKey="Kouwenhoven, L P" uniqKey="Kouwenhoven L">L P Kouwenhoven</name></author></titleStmt><publicationStmt><date when="2012">2012</date><idno type="doi">10.1126/science.1222360</idno><idno type="RBID">pubmed:22499805</idno><idno type="pmid">22499805</idno><idno type="wicri:Area/Main/Corpus">000D74</idno><idno type="wicri:Area/Main/Curation">000D74</idno><idno type="wicri:Area/Main/Exploration">000A85</idno></publicationStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Majorana fermions are particles identical to their own antiparticles. They have been theoretically predicted to exist in topological superconductors. Here, we report electrical measurements on indium antimonide nanowires contacted with one normal (gold) and one superconducting (niobium titanium nitride) electrode. Gate voltages vary electron density and define a tunnel barrier between normal and superconducting contacts. In the presence of magnetic fields on the order of 100 millitesla, we observe bound, midgap 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.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="PubMed-not-MEDLINE"><PMID Version="1">22499805</PMID><DateCreated><Year>2012</Year><Month>05</Month><Day>25</Day></DateCreated><DateCompleted><Year>2012</Year><Month>06</Month><Day>08</Day></DateCompleted><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1095-9203</ISSN><JournalIssue CitedMedium="Internet"><Volume>336</Volume><Issue>6084</Issue><PubDate><Year>2012</Year><Month>May</Month><Day>25</Day></PubDate></JournalIssue><Title>Science (New York, N.Y.)</Title><ISOAbbreviation>Science</ISOAbbreviation></Journal><ArticleTitle>Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices.</ArticleTitle><Pagination><MedlinePgn>1003-7</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1126/science.1222360</ELocationID><Abstract><AbstractText>Majorana fermions are particles identical to their own antiparticles. They have been theoretically predicted to exist in topological superconductors. Here, we report electrical measurements on indium antimonide nanowires contacted with one normal (gold) and one superconducting (niobium titanium nitride) electrode. Gate voltages vary electron density and define a tunnel barrier between normal and superconducting contacts. In the presence of magnetic fields on the order of 100 millitesla, we observe bound, midgap 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.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Mourik</LastName><ForeName>V</ForeName><Initials>V</Initials><Affiliation>Kavli Institute of Nanoscience, Delft University of Technology, Delft, Netherlands.</Affiliation></Author><Author ValidYN="Y"><LastName>Zuo</LastName><ForeName>K</ForeName><Initials>K</Initials></Author><Author ValidYN="Y"><LastName>Frolov</LastName><ForeName>S M</ForeName><Initials>SM</Initials></Author><Author ValidYN="Y"><LastName>Plissard</LastName><ForeName>S R</ForeName><Initials>SR</Initials></Author><Author ValidYN="Y"><LastName>Bakkers</LastName><ForeName>E P A M</ForeName><Initials>EP</Initials></Author><Author ValidYN="Y"><LastName>Kouwenhoven</LastName><ForeName>L P</ForeName><Initials>LP</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType><PublicationType>Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2012</Year><Month>04</Month><Day>12</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Science</MedlineTA><NlmUniqueID>0404511</NlmUniqueID><ISSNLinking>0036-8075</ISSNLinking></MedlineJournalInfo><CommentsCorrectionsList><CommentsCorrections RefType="CommentIn"><RefSource>Science. 2012 May 25;336(6084):989-90</RefSource><PMID Version="1">22628643</PMID></CommentsCorrections></CommentsCorrectionsList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="aheadofprint"><Year>2012</Year><Month>4</Month><Day>12</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2012</Year><Month>4</Month><Day>14</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2012</Year><Month>4</Month><Day>14</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2012</Year><Month>4</Month><Day>14</Day><Hour>6</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pii">science.1222360</ArticleId><ArticleId IdType="doi">10.1126/science.1222360</ArticleId><ArticleId IdType="pubmed">22499805</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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