Modulation of Luttinger liquid behavior by multi-channel electron transport in aligned multi-walled carbon nanotube arrays

Abstract

In the case of one-dimensional systems, Luttinger liquid states are typically anticipated, which have previously been identified primarily in nanoscopic devices fabricated from isolated bundles of single- or multi-walled carbon nanotubes. In this study, the electrical transport properties of aligned multi-walled carbon nanotube arrays were investigated. The resistance of both aligned arrays and those covered with metal Mo exhibits a strong dependence on temperature, demonstrating a power-law relationship of R∼T^–α below 100 K. The Luttinger liquid behavior was modulated by tuning the electron-transport channels via alerting the number of walls that contribute to the conductance within the multi-walled carbon nanotubes. The exponent α, derived theoretically as a parameter that depends on the number of conducting channels, exhibits minimal variation across the arrays and declines rapidly with the tubular structure opening due to the solid-solid reaction between the magnetron-sputtered molybdenum and the carbon atoms.