Inverse photoemission spectroscopy of multiwall carbon nanotubes

Inverse photoemission spectroscopy of multiwall carbon nanotubes

Multiwall Carbon Nanotubes (MWCNTs) were synthesized by Chemical Vapor Deposition (CVD). Two different procedures were used to grow MWCNT films roughly, aligned in the direction normal to the SiO2/Si(111) substrate. Inverse Photoemission Spectroscopy measurements, on these samples, show the existence of resonances which could be traced back to a flat graphene sheet. The unoccupied valence band is fairly similar to that shown by graphite except by an additional intensity in the vicinity of the Fermi level. This resonance could be interpreted both as tubes tips end effects or van Hove singularities in the density of states.

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Main Authors: Hevia,Samuel, Ibáñez,Wladimir, Segura,Rodrigo, Häberle,Patricio
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Física 2006
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000600025
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spelling oai:scielo:S0103-973320060006000252006-11-29Inverse photoemission spectroscopy of multiwall carbon nanotubesHevia,SamuelIbáñez,WladimirSegura,RodrigoHäberle,Patricio Multiwall carbon nanotubes Inverse photoemission Multiwall Carbon Nanotubes (MWCNTs) were synthesized by Chemical Vapor Deposition (CVD). Two different procedures were used to grow MWCNT films roughly, aligned in the direction normal to the SiO2/Si(111) substrate. Inverse Photoemission Spectroscopy measurements, on these samples, show the existence of resonances which could be traced back to a flat graphene sheet. The unoccupied valence band is fairly similar to that shown by graphite except by an additional intensity in the vicinity of the Fermi level. This resonance could be interpreted both as tubes tips end effects or van Hove singularities in the density of states.info:eu-repo/semantics/openAccessSociedade Brasileira de FísicaBrazilian Journal of Physics v.36 n.3b 20062006-09-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000600025en10.1590/S0103-97332006000600025
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Hevia,Samuel
Ibáñez,Wladimir
Segura,Rodrigo
Häberle,Patricio
spellingShingle Hevia,Samuel
Ibáñez,Wladimir
Segura,Rodrigo
Häberle,Patricio
Inverse photoemission spectroscopy of multiwall carbon nanotubes
author_facet Hevia,Samuel
Ibáñez,Wladimir
Segura,Rodrigo
Häberle,Patricio
author_sort Hevia,Samuel
title Inverse photoemission spectroscopy of multiwall carbon nanotubes
title_short Inverse photoemission spectroscopy of multiwall carbon nanotubes
title_full Inverse photoemission spectroscopy of multiwall carbon nanotubes
title_fullStr Inverse photoemission spectroscopy of multiwall carbon nanotubes
title_full_unstemmed Inverse photoemission spectroscopy of multiwall carbon nanotubes
title_sort inverse photoemission spectroscopy of multiwall carbon nanotubes
description Multiwall Carbon Nanotubes (MWCNTs) were synthesized by Chemical Vapor Deposition (CVD). Two different procedures were used to grow MWCNT films roughly, aligned in the direction normal to the SiO2/Si(111) substrate. Inverse Photoemission Spectroscopy measurements, on these samples, show the existence of resonances which could be traced back to a flat graphene sheet. The unoccupied valence band is fairly similar to that shown by graphite except by an additional intensity in the vicinity of the Fermi level. This resonance could be interpreted both as tubes tips end effects or van Hove singularities in the density of states.
publisher Sociedade Brasileira de Física
publishDate 2006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000600025
work_keys_str_mv AT heviasamuel inversephotoemissionspectroscopyofmultiwallcarbonnanotubes
AT ibanezwladimir inversephotoemissionspectroscopyofmultiwallcarbonnanotubes
AT segurarodrigo inversephotoemissionspectroscopyofmultiwallcarbonnanotubes
AT haberlepatricio inversephotoemissionspectroscopyofmultiwallcarbonnanotubes
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