Effects of phonon dimensionality in the specific heat of multiwall carbon nanotubes at low temperatures
We have measured the specific heat at constant pressure, Cp, of three different samples of multiwall carbon nanotubes (MWNT). For all samples, Cp departs from a graphitic behavior at T < 120 K. Cp measurements show a temperature threshold from a linear regime for intermediate temperature to a...
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Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_17426588_v167_n_p_Jorge |
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paperaa:paper_17426588_v167_n_p_Jorge2023-06-12T16:51:01Z Effects of phonon dimensionality in the specific heat of multiwall carbon nanotubes at low temperatures J. Phys. Conf. Ser. 2009;167 Jorge, G.A. Bekeris, V. Acha, C. Escobar, M.M. Goyanes, S. Zilli, D. Cukierman, A.L. Candal, R.J. We have measured the specific heat at constant pressure, Cp, of three different samples of multiwall carbon nanotubes (MWNT). For all samples, Cp departs from a graphitic behavior at T < 120 K. Cp measurements show a temperature threshold from a linear regime for intermediate temperature to a higher-order power law for low temperatures. Moreover, it was found that this crossover only depends on the internal structure of the individual MWNT and not on the spatial order of the MWNT within a bundle. © 2009 IOP Publishing Ltd. Fil:Jorge, G.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bekeris, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Acha, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Escobar, M.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Goyanes, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cukierman, A.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Candal, R.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 info:eu-repo/semantics/conferenceObject info:ar-repo/semantics/documento de conferencia info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_17426588_v167_n_p_Jorge |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
language |
Inglés |
orig_language_str_mv |
eng |
description |
We have measured the specific heat at constant pressure, Cp, of three different samples of multiwall carbon nanotubes (MWNT). For all samples, Cp departs from a graphitic behavior at T < 120 K. Cp measurements show a temperature threshold from a linear regime for intermediate temperature to a higher-order power law for low temperatures. Moreover, it was found that this crossover only depends on the internal structure of the individual MWNT and not on the spatial order of the MWNT within a bundle. © 2009 IOP Publishing Ltd. |
format |
Documento de conferencia Documento de conferencia publishedVersion |
author |
Jorge, G.A. Bekeris, V. Acha, C. Escobar, M.M. Goyanes, S. Zilli, D. Cukierman, A.L. Candal, R.J. |
spellingShingle |
Jorge, G.A. Bekeris, V. Acha, C. Escobar, M.M. Goyanes, S. Zilli, D. Cukierman, A.L. Candal, R.J. Effects of phonon dimensionality in the specific heat of multiwall carbon nanotubes at low temperatures |
author_facet |
Jorge, G.A. Bekeris, V. Acha, C. Escobar, M.M. Goyanes, S. Zilli, D. Cukierman, A.L. Candal, R.J. |
author_sort |
Jorge, G.A. |
title |
Effects of phonon dimensionality in the specific heat of multiwall carbon nanotubes at low temperatures |
title_short |
Effects of phonon dimensionality in the specific heat of multiwall carbon nanotubes at low temperatures |
title_full |
Effects of phonon dimensionality in the specific heat of multiwall carbon nanotubes at low temperatures |
title_fullStr |
Effects of phonon dimensionality in the specific heat of multiwall carbon nanotubes at low temperatures |
title_full_unstemmed |
Effects of phonon dimensionality in the specific heat of multiwall carbon nanotubes at low temperatures |
title_sort |
effects of phonon dimensionality in the specific heat of multiwall carbon nanotubes at low temperatures |
publishDate |
2009 |
url |
http://hdl.handle.net/20.500.12110/paper_17426588_v167_n_p_Jorge |
work_keys_str_mv |
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1769810143455739904 |