Chirality effects on an electron transport in single-walled carbon nanotube

Abstract

In our work, we investigate characteristics of conductivity for single-walled carbon nanotubes caused by spin–orbit interaction. In the case study of chirality indexes, we especially research on the three types of single-walled carbon nanotubes which are the zigzag, the chiral, and the armchair. The mathematical analysis employed for our works is the Green-Kubo Method. For the theoretical results of our work, we discover that the chirality of single-walled carbon nanotubes impacts the interaction leading to the spin polarization of conductivity. We acknowledge such asymmetry characteristics by calculating the longitudinal current–current correlation function difference between a positive and negative wave vector in which there is the typical chiral-dependent. We also find out that the temperature and the frequency of electrons affect the function producing the different characteristics of the conductivity. From particular simulations, we obtain that the correlation decrease when the temperature increase for a low frequency of electrons. For high frequency, the correlation is nonmonotonic temperature dependence. The results of the phenomena investigated from our study express different degrees of spin polarization in each chiral of single-walled carbon nanotube and significant effects on temperature-dependent charge transport according to carrier backscattering. By chiral-induced spin selectivity that produces different spin polarization, our work could be applied for intriguing optimization charge transport.

Ultrafast Interface Charge Separation in Carbon Nanodot–Nanotube Hybrids

“…Single-wall (SW) and multiwall (MW) carbon nanotubes (CNTs) are endowed with a range of exceptional properties ultimately related to their 1D structure. , The properties of SWCNTs can be finely tailored based on their structure. Depending on chirality, their electronic characteristics can range from conductive to semiconductive . Moreover, by changing the diameter, one can tune the π-plasmon feature and the electronic band gap of semiconductive CNTs within the infrared spectral range. , Decorating the surface of CNTs with various functional groups or molecules, it is also possible to increase their colloidal stability in different solvents and preparing them for coupling to other nanomaterials, such as CDs.…”

“…Depending on chirality, their electronic characteristics can range from conductive to semiconductive. 19 Moreover, by changing the diameter, one can tune the π-plasmon feature and the electronic band gap of semiconductive CNTs within the infrared spectral range. 20,21 Decorating the surface of CNTs with various functional groups or molecules, 22 it is also possible to increase their colloidal stability in different solvents and preparing them for coupling to other nanomaterials, such as CDs.…”

Characterization of Carbon Nanostructures by Photoelectron Spectroscopies

“…The latter may be categorized in single-walled CNTs (SWCNT) and multiwalled CNTs (MWCNT). In addition, in SWCNTs, the chirality is used to discriminate between metallic and semiconducting nanotubes [102]. Various synthesis processes are utilized to produce these different kinds of CNTs.…”

Theoretical Analysis of High-Harmonic Generation in Silicon Nanotubes

“…Zigzag silicon hexagonal nanotube (Si h-NT) [10,11] is the chiral type that the research [12] studied theoretically through the tight-binding method. Moreover, silicene certainly can generate high harmonic photon emission [14,16] in common with graphene and carbon nanotubes [7]. This phenomenon was considered by specific approaches like the semi-classical calculations that analyze the electron transition (both from interband and intraband components) [13,15] and the time-dependent Schrödinger equation from the tight-binding method and dipole effect.…”