Weak Antilocalization Tailor-Made by System Topography in Large Scale Bismuth Antidot Arrays.

ABSTRACT: Using a two-carriers model and the Hikami-Larkin-Nagaoka (HLN) theory, we investigate the influence of large area patterning on magnetotransport properties in bismuth thin films with a thickness of 50 nm. The patterned systems have been produced by means of nanospheres lithography complemented by RF-plasma etching leading to highly ordered antidot arrays with the hexagonal symmetry and a variable antidot size. Simultaneous measurements of transverse and longitudinal magnetoresistance in a broad temperature range provided comprehensive data on transport properties and enabled us to extract the values of charge carrier densities and mobilities. Weak antilocalization signatures observed at low temperatures provided information on spin-orbit scattering length ranging from 20 to 30 nm, elastic

SUBMITTER: Krupinski M 

PROVIDER: S-EPMC7436095 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature