Evolution of superconductivity and antiferromagnetic order in Ba(Fe0.92-xCo0.08Vx)2As2

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Jieming Sheng
  • Xingguang Li
  • Congkuan Tian
  • Jianming Song
  • Xin Li
  • Guangai Sun
  • Tianlong Xia
  • Jinchen Wang
  • Juanjuan Liu
  • Daye Xu
  • Hongxia Zhang
  • Xin Tong
  • Wei Luo
  • Liusuo Wu
  • Peng Cheng

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Detail(s)

Original languageEnglish
Article number174516
Journal / PublicationPhysical Review B
Volume101
Issue number17
Online published28 May 2020
Publication statusPublished - May 2020

Abstract

The vanadium doping effects on the superconductivity and magnetism of iron pnictides are investigated in Ba(Fe0.92-xCo0.08Vx)2As2 by transport, susceptibility, and neutron scattering measurements. The doping of magnetic impurity V causes a fast suppression of superconductivity with TC reduced at a rate of approximately 7.4 K/1% V. On the other hand, for x ≥ 0.02, long-range C-type antiferromagnetic order is recovered upon V doping, in contrast to the x = 0 sample with no detectable magnetic order. The value of ordered magnetic moments of Ba(Fe0.92-xCo0.08Vx)2As2 follows a domelike evolution versus doping concentration x. A possible Griffiths-type antiferromagnetic region of multiple coexisting phases in the phase diagram of Ba(Fe0.92-xCo0.08Vx)2As2 is identified, in accordance with previous theoretical predictions based on the cooperative behavior of magnetic impurities and conduction electrons mediating the Ruderman-Kittel-Kasuya-Yosida interactions between them.

Citation Format(s)

Evolution of superconductivity and antiferromagnetic order in Ba(Fe0.92-xCo0.08Vx)2As2. / Sheng, Jieming; Li, Xingguang; Tian, Congkuan; Song, Jianming; Li, Xin; Sun, Guangai; Xia, Tianlong; Wang, Jinchen; Liu, Juanjuan; Xu, Daye; Zhang, Hongxia; Tong, Xin; Luo, Wei; Wu, Liusuo; Bao, Wei; Cheng, Peng.

In: Physical Review B, Vol. 101, No. 17, 174516, 05.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review