Doping evolution of antiferromagnetism and transport properties in the non-superconducting BaFe2-2xNixCrxAs2

Research output: Contribution to journalArticlepeer-review

Authors

  • Rui Zhang
  • Dongliang Gong
  • Xingye Lu
  • Shiliang Li
  • Christof Niedermayer
  • Sergey Danilkin
  • Guochu Deng
  • Pengcheng Dai
  • Huiqian Luo

Colleges, School and Institutes

Abstract

We report elastic neutron scattering and transport measurements on the Ni and Cr equivalently doped iron pnictide BaFe2-2xNixCrxAs2. Compared with the electron-doped BaFe2-2xNixCrxAs2, the long-range antiferromagnetic (AF) order in BaFe2-2xNixCrxAs2 is gradually suppressed with vanishing ordered moment and Neel temperature near x= 0.20 without the appearance of superconductivity. A detailed analysis on the transport properties of BaFe2-xNixAs and BaFe2-xNixAs and BaFe2-2xNixCrxAs2 suggests that the non-Fermi-liquid behavior associated with the linear resistivity as a function of temperature may not correspond to the disappearance of the static AF order. From the temperature dependence of the resistivity in overdoped compounds without static AF order, we find that the transport properties are actually affected by Cr impurity scattering, which may induce a metal-to-insulator crossover in highly doped BaFe1.7-yNi0.3CryAs2.

Bibliographic note

10 pages, 12 figures

Details

Original languageEnglish
Article number094506
JournalPhysical Review B
Volume91
Publication statusPublished - 12 Mar 2015

Keywords

  • cond-mat.supr-con, cond-mat.str-el