Effect of chemical functionalization on charge transport of multiwall carbon nanotube

Maity, Krishna Prasad and Prasad, V (2019) Effect of chemical functionalization on charge transport of multiwall carbon nanotube. In: MATERIALS RESEARCH EXPRESS, 6 (8).

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Abstract

We have studied the effect of chemical functionalization on charge transport property of multiwall carbon nanotube (MWNT) down to the temperature 4.2 K and magnetic field up to 5 T. The resistivity ratio (rho(r) = rho(T)/rho(100 K)]) increases with the increment of degree of functionalization at low temperature as the effect of inclusion of disorder in the samples. The variation of resistivity with temperature has been explained by 3D variable range hopping model and Coulomb gap Efros-Shklovskii model, and the result shows that higher degree of functionalization enhances the disorder induced electron-electron interaction. For all the measured temperature and degree of functionalization, MWNTs show negative magnetoresistance. Negative magnetoresistance has been explained by 3D weak localization model.

Item Type:	Journal Article
Publication:	MATERIALS RESEARCH EXPRESS
Publisher:	IOP PUBLISHING LTD
Additional Information:	copyright for this article belongs to IOP PUBLISHING LTD
Keywords:	functionalized Carbon nanotube; variable range hopping; weak localization; low temperature transport
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	09 Jul 2019 05:33
Last Modified:	09 Jul 2019 06:28
URI:	http://eprints.iisc.ac.in/id/eprint/63024

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