Computational study of CNT based nanoscale reversible mass transport archival memory with Fe, Co and Ni nano-shuttles

We report the atomistic study of a carbon nanotube (CNT) mass transport memory with Fe, Co and Ni nanoparticle shuttles encapsulated within it. For our calculation the extended-Hückel theory has been employed to study the various electronic, electrostatic and transport of such devices. The simulation results show that all the three sets of CNT devices with Fe, Co and Ni nano-shuttle are efficient in performance in terms of distinguishable electronic properties, with regard to nanoparticle position and type of nanoparticles. There is observable change in transmission w.r.t. change of positions and type of nanoparticles. Fe@CNT shows more metallic nature of transmission as compared to Co@CNT and Ni@CNT. All the devices show minimal loss of coherence in transmission in terms of conducting eigenstates and elastic backscattering. The Ni and Co nanoparticle captured more amount of charge as compared to Fe nanoparticle, and can offer superior performance in case of charge sensing detection of memory states.