dc.contributor.author
Ruby, Michael
dc.contributor.author
Heinrich, Benjamin
dc.contributor.author
Pascual, Jose I.
dc.contributor.author
Franke, Katharina
dc.date.accessioned
2018-06-08T03:31:50Z
dc.date.available
2016-06-03T09:59:34.597Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/15380
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-19568
dc.description.abstract
The type I superconductor lead (Pb) has been theoretically predicted to be a
two-band superconductor. We use scanning tunneling spectroscopy (STS) to
resolve two superconducting gaps with an energy difference of 150 μeV.
Tunneling into Pb(111), Pb(110), and Pb(100) crystals reveals a strong
dependence of the two coherence peak intensities on the crystal orientation.
We show that this is the result of a selective tunneling into the two bands at
the energy of the two coherence peaks. This is further sustained by the
observation of signatures of the Fermi sheets in differential conductance maps
around subsurface defects. A modification of the density of states of the two
bands by adatoms on the surface confirms the different orbital character of
each of the two subbands.
en
dc.format.extent
5 Seiten
dc.rights.uri
http://journals.aps.org/authors/transfer-of-copyright-agreement
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik
dc.title
Experimental Demonstration of a Two-Band Superconducting State for Lead Using
Scanning Tunneling Spectroscopy
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation
Physical Review Letters. - 114 (2015), 15, Artikel Nr. 157001/1-5
dc.identifier.sepid
48910
dcterms.bibliographicCitation.doi
10.1103/PhysRevLett.114.157001
dcterms.bibliographicCitation.url
http://dx.doi.org/10.1103/PhysRevLett.114.157001
refubium.affiliation
Physik
de
refubium.affiliation.other
Institut für Experimentalphysik
refubium.mycore.fudocsId
FUDOCS_document_000000024683
refubium.note.author
Bei der PDF-Datei handelt es sich um eine Manuskriptversion des Artikels.
refubium.resourceType.isindependentpub
no
refubium.mycore.derivateId
FUDOCS_derivate_000000006513
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
0031-9007