Callaghan Innovation Research Papers

Back to Research Papers

TitleMagneto-resistance study of AFe2As2 (A = Sr, Ba) iron-based compounds
Publication TypeJournal Article
Year of Publication2014
AuthorsChong, S.V., Williams G.V.M., Sambale S., Kennedy J., and Kadowaki K.
JournalInternational Journal of Nanotechnology
Pagination403 - 411
Date Published2014
ISSN14757435 (ISSN)
KeywordsCalcium, Current transport, Dirac fermions, Ion implanted, Iron compounds, Iron-pnictides, Low temperatures, Magnetoresistance, Near surface regions, Near surfaces, Superconducting state, Superconductivity
AbstractWe have investigated the magneto-resistance (MR) from the two main AFe 2As2 compounds (with A = Sr and Ba) and a low energy Ca ion implanted SrFe2As2 crystal up to 8 T. We show that MR from BaFe2As2 and SrFe2As 2 single crystals are similar and a quantum linear MR model favoured by some authors is probably not appropriate especially since the MR is not linear. The SrFe2As2 sample with a near surface Ca concentration of 0.8 at.% has a larger MR at low temperatures that is probably due to current transport in the near surface region and in an inhomogeneous normal and superconducting state. Copyright © 2014 Inderscience Enterprises Ltd.

Back to top