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Quantized Phonon Spectrum of Single-Wall Carbon Nanotubes

Hone, J. and Batlogg, B. and Benes, Z. and Johnson, A. T. and Fischer, J. E. (2000) Quantized Phonon Spectrum of Single-Wall Carbon Nanotubes. Science, 289 (5485). pp. 1730-1733. ISSN 0036-8075. doi:10.1126/science.289.5485.1730.

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The electronic spectra of carbon nanotubes and other nanoscale systems are quantized because of their small radii. Similar quantization in the phonon spectra has been difficult to observe because of the far smaller energy scale. We probed this regime by measuring the temperature-dependent specific heat of purified single-wall nanotubes. The data show direct evidence of one-dimensional quantized phonon subbands. Above 4 kelvin, they are in excellent agreement with model calculations of individual nanotubes and differ markedly from the specific heat of two-dimensional graphene or three-dimensional graphite. Detailed modeling yields an energy of 4.3 millielectron volts for the lowest quantized phonon subband and a tube-tube (or “lattice”) Debye energy of 1.1 millielectron volts, implying a small intertube coupling in bundles.

Item Type:Article
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Hone, J.0000-0002-8084-3301
Additional Information:© 2000 American Association for the Advancement of Science. 11 May 2000; accepted 18 July 2000. Supported by NSF grant DMR-9802560 ( J.H. and A.T.J.), Department of Energy grant DEFG02-98ER45701 ( J.H., Z.B., and J.E.F.), and NSF Materials Research Science Engineering Center grant DMR-9632598. We thank P. Papanek, D. E. Luzzi, and N. M. Nemes for the CP calculation of graphite, HRTEM, and EDX analyses respectively; J.-P. Issi for bringing (20) to our attention; D. Colbert for graciously providing the SWNT material; and E. J. Mele, M. S. Dresselhaus, and A. Mizel for helpful conversations.
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Department of Energy (DOE)DE-FG02-98ER45701
Issue or Number:5485
Record Number:CaltechAUTHORS:20141113-104039908
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Official Citation:Quantized Phonon Spectrum of Single-Wall Carbon Nanotubes J. Hone, B. Batlogg, Z. Benes, A. T. Johnson, and J. E. Fischer Science 8 September 2000: 289 (5485), 1730-1733. [DOI:10.1126/science.289.5485.1730]
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51706
Deposited By: Ruth Sustaita
Deposited On:13 Nov 2014 21:07
Last Modified:10 Nov 2021 19:14

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