Tomonaga-Luttinger liquid and Coulomb blockade in multiwall carbon nanotubes under pressure

We report that the conductance of macroscopic multiwall nanotube (MWNT) bundles under pressure shows power laws in temperature and voltage, as corresponding to a network of bulk-bulk connected Tomonaga-Luttinger liquids (LLs). Contrary to individual MWNTs, where the observed power laws are attribute...

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Detalles Bibliográficos
Autores principales: Monteverde, M., Garbarino, G., Núñez-Regueiro, M., Souletie, J., Acha, C., Jing, X., Lu, L., Pan, Z.W., Xie, S.S., Egger, R.
Formato: JOUR
Materias:
Band structure
Coulomb blockade
Electric potential
Thermal effects
Interband separation
Power laws
Tomonaga-Luttinger liquids (LL)
Carbon nanotubes
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00319007_v97_n17_p_Monteverde
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:We report that the conductance of macroscopic multiwall nanotube (MWNT) bundles under pressure shows power laws in temperature and voltage, as corresponding to a network of bulk-bulk connected Tomonaga-Luttinger liquids (LLs). Contrary to individual MWNTs, where the observed power laws are attributed to Coulomb blockade, the measured ratio for the end and bulk obtained exponents, ∼2.4, can be accounted for only by LL theory. At temperatures characteristic of interband separation, it increases due to thermal population of the conducting sheets unoccupied bands. © 2006 The American Physical Society.

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