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Title: Resonance Raman signature of intertube excitons in compositionally-defined carbon nanotube bundles

Abstract

Electronic interactions in low-dimensional nanomaterial heterostructures can lead to novel optical responses arising from exciton delocalization over the constituent materials. Similar phenomena have been suggested to arise between closely interacting semiconducting carbon nanotubes of identical structure. Such behavior in carbon nanotubes has potential to generate new exciton physics, impact exciton transport mechanisms in nanotube networks, and place nanotubes as one-dimensional models for such behaviors in systems of higher dimensionality. Here we use resonance Raman spectroscopy to probe intertube interactions in (6,5) chirality-enriched bundles. Raman excitation profiles for the radial breathing mode and G-mode display a previously unobserved sharp resonance feature. We show the feature is evidence for creation of intertube excitons and is identified as a Fano resonance arising from the interaction between intratube and intertube excitons. The universality of the model suggests that similar Raman excitation profile features may be observed for interlayer exciton resonances in 2D multilayered systems.

Authors:
 [1];  [2];  [3]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [3]
  1. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Towson Univ., MD (United States)
  2. Fordham Univ., Bronx, NY (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1423977
Report Number(s):
LA-UR-17-27830
Journal ID: ISSN 2041-1723
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Material Science

Citation Formats

Simpson, Jeffrey R., Roslyak, Oleksiy, Duque, Juan G., Hároz, Erik H., Crochet, Jared J., Telg, Hagen, Piryatinski, Andrei, Walker, Angela R. Hight, and Doorn, Stephen K. Resonance Raman signature of intertube excitons in compositionally-defined carbon nanotube bundles. United States: N. p., 2018. Web. doi:10.1038/s41467-018-03057-7.
Simpson, Jeffrey R., Roslyak, Oleksiy, Duque, Juan G., Hároz, Erik H., Crochet, Jared J., Telg, Hagen, Piryatinski, Andrei, Walker, Angela R. Hight, & Doorn, Stephen K. Resonance Raman signature of intertube excitons in compositionally-defined carbon nanotube bundles. United States. doi:10.1038/s41467-018-03057-7.
Simpson, Jeffrey R., Roslyak, Oleksiy, Duque, Juan G., Hároz, Erik H., Crochet, Jared J., Telg, Hagen, Piryatinski, Andrei, Walker, Angela R. Hight, and Doorn, Stephen K. Mon . "Resonance Raman signature of intertube excitons in compositionally-defined carbon nanotube bundles". United States. doi:10.1038/s41467-018-03057-7. https://www.osti.gov/servlets/purl/1423977.
@article{osti_1423977,
title = {Resonance Raman signature of intertube excitons in compositionally-defined carbon nanotube bundles},
author = {Simpson, Jeffrey R. and Roslyak, Oleksiy and Duque, Juan G. and Hároz, Erik H. and Crochet, Jared J. and Telg, Hagen and Piryatinski, Andrei and Walker, Angela R. Hight and Doorn, Stephen K.},
abstractNote = {Electronic interactions in low-dimensional nanomaterial heterostructures can lead to novel optical responses arising from exciton delocalization over the constituent materials. Similar phenomena have been suggested to arise between closely interacting semiconducting carbon nanotubes of identical structure. Such behavior in carbon nanotubes has potential to generate new exciton physics, impact exciton transport mechanisms in nanotube networks, and place nanotubes as one-dimensional models for such behaviors in systems of higher dimensionality. Here we use resonance Raman spectroscopy to probe intertube interactions in (6,5) chirality-enriched bundles. Raman excitation profiles for the radial breathing mode and G-mode display a previously unobserved sharp resonance feature. We show the feature is evidence for creation of intertube excitons and is identified as a Fano resonance arising from the interaction between intratube and intertube excitons. The universality of the model suggests that similar Raman excitation profile features may be observed for interlayer exciton resonances in 2D multilayered systems.},
doi = {10.1038/s41467-018-03057-7},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {Mon Feb 12 00:00:00 EST 2018},
month = {Mon Feb 12 00:00:00 EST 2018}
}

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