Magneto-resistance study of AFe2As2 (A = Sr, Ba) iron-based compounds

被引：2
|
作者：
Chong, S. V. [1 ]
Williams, G. V. M. [2 ]
Sambale, S. [1 ,2 ]
Kennedy, J. [3 ]
Kadowaki, K. [4 ]
机构：
[1] Callaghan Innovat Res Ltd, Lower Hutt, New Zealand
[2] Victoria Univ Wellington, Sch Chem & Phys Sci, MacDiarmid Inst, Wellington, New Zealand
[3] GNS Sci, Natl Isotope Ctr, Lower Hutt, New Zealand
[4] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 305, Japan
来源：
INTERNATIONAL JOURNAL OF NANOTECHNOLOGY | 2014年 / 11卷 / 5-8期
关键词：
iron-pnictides; superconductivity; magneto-resistance; Dirac fermions; quantum linear magneto-resistance; HIGH-TEMPERATURE SUPERCONDUCTIVITY;
D O I：
10.1504/IJNT.2014.060558
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We have investigated the magneto-resistance (MR) from the two main AFe(2)As(2) 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.
引用
收藏
页码：403 / 411
页数：9
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