Role of transition metal dopants on spin dependent electronic behavior of nanotubes

2^nd International Conference and Exhibition on Mesoscopic and Condensed Matter Physics

October 26-28, 2016 Chicago, USA

Serkan Caliskan

Fatih University, Turkey

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

Spintronics is a developing and attractive field in both science and engineering due to possible new interesting applications. It plays an important role in nanotechnology and industrial applications. This field is related to role of spins or manipulation of spins through the nanostructures. Nanostructures (including nanotubes, nanowires and atomic wires) upon combining with spintronics, lead to new type devices with multifunctional and superior properties. Concerning the applications, detailed understanding of properties of these structures and interactions between electrons and the medium in which they move; and therefore, investigation of spin polarized transport (electron movement), evaluation of spin polarized quantities, examination of dependencies on other factors (topological disorder, electronic correlations, temperature, impurities, external field, etc.) are required. In the present study, we perform density functional theory calculations on boron nitride nanotubes (BNNTs), which are containing substitutional transition metal (TM) dopants, to reveal the spin dependent electronic structure properties. The dopants are chosen as TM atoms to be able to induce possible spin dependent behavior and/or to emerge the spin polarization in the structures. Both optimized pure and doped several zigzag nanotubes with infinite lengths are investigated. We mainly concentrate on electronic structure and magnetic properties in terms of chiral vector describing the doped zigzag nanotubes. Hence we extract the impact of chirality and dopants on the spin dependent energy gap and other relevant quantities for relaxed nanotubes. BNNTs and carbon nanotubes are compared and obtained results are discussed for the possible applications of these nanotubes, as fundamental structures, in the field of spintronics.

Biography :

Email: caliskan34@gmail.com