%0 Journal Article %1 luer2009ultrafast %A Luer, Larry %A Lanzani, Guglielmo %A Crochet, Jared %A Hertel, Tobias %A Holt, Josh %A Vardeny, Z. Valy %D 2009 %J PHYSICAL REVIEW B %K imported myown %N 20 %R 10.1103/PhysRevB.80.205411 %T Ultrafast dynamics in metallic and semiconducting carbon nanotubes %V 80 %X Transient polarized pump/probe transmission changes upon pulse photoexcitation at 1.6 eV were measured in chiral enriched carbon nanotubes ensembles of both metallic and semiconductor characters, in a very broad probe spectral range from mid-IR to visible, combining several ultrafast laser systems. We identify a photoinduced absorption band at similar to 0.7 eV as due to hot Dirac fermions in the metallic tubes and measure its dynamics. The hot carriers equilibrate within the electronic system in similar to 400 fs and with the lattice within similar to 2 ps; in agreement with hot Dirac fermions thermalization in graphene. We also assign excitonic transitions in the semiconducting tubes, mainly of (6,5) chirality; in particular, an intraexciton transition at similar to 0.4 eV represents a lower limit for the exciton binding energy.

@article{luer2009ultrafast, abstract = {{Transient polarized pump/probe transmission changes upon pulse photoexcitation at 1.6 eV were measured in chiral enriched carbon nanotubes ensembles of both metallic and semiconductor characters, in a very broad probe spectral range from mid-IR to visible, combining several ultrafast laser systems. We identify a photoinduced absorption band at similar to 0.7 eV as due to hot Dirac fermions in the metallic tubes and measure its dynamics. The hot carriers equilibrate within the electronic system in similar to 400 fs and with the lattice within similar to 2 ps; in agreement with hot Dirac fermions thermalization in graphene. We also assign excitonic transitions in the semiconducting tubes, mainly of (6,5) chirality; in particular, an intraexciton transition at similar to 0.4 eV represents a lower limit for the exciton binding energy.}}, added-at = {2021-01-26T13:59:32.000+0100}, article-number = {{205411}}, author = {Luer, Larry and Lanzani, Guglielmo and Crochet, Jared and Hertel, Tobias and Holt, Josh and Vardeny, Z. Valy}, biburl = {https://www.bibsonomy.org/bibtex/280d8c98ee3f1951a56fa51ad75a452ba/hertel-group}, doi = {{10.1103/PhysRevB.80.205411}}, interhash = {185ec5b2118e90cf87a696f1651efdef}, intrahash = {80d8c98ee3f1951a56fa51ad75a452ba}, issn = {{1098-0121}}, journal = {{PHYSICAL REVIEW B}}, keywords = {imported myown}, month = {{NOV}}, number = {{20}}, orcid-numbers = {{Crochet, Jared/0000-0002-9570-2173}}, researcherid-numbers = {{Holt, Josh/G-8094-2011 Hertel, Tobias/J-4243-2012 Hertel, Tobias/D-5805-2013 Luer, Larry/L-9375-2014 Crochet, Jared/C-8488-2011 }}, timestamp = {2021-01-26T13:59:47.000+0100}, title = {{Ultrafast dynamics in metallic and semiconducting carbon nanotubes}}, unique-id = {{ISI:000272311400097}}, volume = {{80}}, year = {{2009}} }