Quantum states and specific heat of low-density He gas adsorbed within carbon nanotube interstitial channels: Band-structure effects and potential dependence

Šiber, Antonio and Buljan, Hrvoje (2002) Quantum states and specific heat of low-density He gas adsorbed within carbon nanotube interstitial channels: Band-structure effects and potential dependence. Physical Review B, 66 (7). pp. 75415-5. ISSN 1098-0121

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Abstract

We calculate the energy-band structure of a He atom trapped within the interstitial channel between close-packed nanotubes within a bundle and its influence on the specific heat of the adsorbed gas. A robust prediction of our calculations is that the contribution of the low-density adsorbed gas to the specific heat of the nanotube material shows pronounced nonmonotonic variations with temperature. These variations are shown to be closely related to the band gaps in the adsorbate density of states.

Item Type: Article
Keywords: specific heat, low-density He gas, carbon nanotube, band-structures
Date: August 2002
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2002) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 0119250, 0035017
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 22 May 2014 19:05
Last Modified: 22 May 2014 19:05
URI: http://digre.pmf.unizg.hr/id/eprint/1616

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