Thermoelectric Power ofp-Doped Single-Wall Carbon Nanotubes and the Role of Phonon Drag

Autor:	Richard E. Smalley, Robert H. Hauge, Lars M. Ericson, Virginia A. Davis, John E. Fischer, Sivarajan Ramesh, Rajesh K. Saini, M. C. Llaguno, Juraj Vavro, Matteo Pasquali
Rok vydání:	2003
Předmět:	Materials science Condensed matter physics Scattering Doping General Physics and Astronomy Fermi energy Carbon nanotube law.invention Condensed Matter::Materials Science law Condensed Matter::Superconductivity Seebeck coefficient Condensed Matter::Strongly Correlated Electrons Phonon drag
Zdroj:	Physical Review Letters. 90
ISSN:	1079-7114 0031-9007
Popis:	We measured thermoelectric power S of bulk single-wall carbon nanotube materials p doped with acids. In contrast to oxygen-exposed or degassed samples, S is very small at the lowest temperatures, increases superlinearly above a characteristic and sample-dependent T, and then levels off. We attribute this unusual behavior to 1D phonon drag, in which the depression of the Fermi energy cuts off electron-phonon scattering at temperatures below a characteristic T0. This idea is supported by a model calculation in which the low temperature behavior of phonon drag is specifically related to the one-dimensional character of the electronic spectrum.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47671dd95aa0e269ad051217e405893e https://doi.org/10.1103/physrevlett.90.065503 Zobrazit plný text záznamu