Magneto-resistance study of AFe₂As₂ (A = Sr, Ba) iron-based compounds
by S.V. Chong; G.V.M. Williams; S. Sambale; J. Kennedy; K. Kadowaki
International Journal of Nanotechnology (IJNT), Vol. 11, No. 5/6/7/8, 2014

Abstract: We have investigated the magneto-resistance (MR) from the two main AFe₂As₂ 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 SrFe₂As₂ 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.

Online publication date: Mon, 15-Dec-2014

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