Ba(Fe$_{0.92-x}$Co$_{0.08}$V$_x$)$_2$As$_2$中超导与反铁磁序的演化

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; Wei Bao; Peng Cheng

doi:10.1103/PhysRevB.101.174516

Ba(Fe$_{0.92-x}$Co$_{0.08}$V$_x$)$_2$As$_2$中超导与反铁磁序的演化

超导电性 2020-06-05 v1

作者: 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 , Wei Bao , Peng Cheng

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摘要

通过输运、磁化率和中子散射测量，研究了钒掺杂对铁砷化物Ba(Fe $_{0.92-x}$ Co $_{0.08}$ V $_x$ ) $_2$ As $_2$ 超导性和磁性的影响。磁性杂质V的掺杂导致超导快速抑制，T $_c$ 以7.4~K/1\%V的速率降低。另一方面，长程公度 $C$ 型反铁磁序随V掺杂而恢复。Ba(Fe $_{0.92-x}$ Co $_{0.08}$ V $_x$ ) $_2$ As $_2$ 的有序磁矩值随掺杂浓度x呈穹顶状演化。在Ba(Fe $_{0.92-x}$ Co $_{0.08}$ V $_x$ ) $_2$ As $_2$ 相图中识别出一个可能的Griffiths型反铁磁区域，包含多重共存相，这与先前基于磁性杂质与传导电子之间介导Ruderman-Kittel-Kasuya-Yosida相互作用的协同行为的理论预测一致。

关键词

铁砷化物钒掺杂超导性反铁磁序中子散射 Griffiths相 RKKY相互作用

引用

@article{arxiv.2001.10151,
  title  = {Evolution of superconductivity and antiferromagnetic order in Ba(Fe$_{0.92-x}$Co$_{0.08}$V$_x$)$_2$As$_2$},
  author = {Jieming Sheng and Xingguang Li and Congkuan Tian and Jianming Song and Xin Li and Guangai Sun and Tianlong Xia and Jinchen Wang and Juanjuan Liu and Daye Xu and Hongxia Zhang and Xin Tong and Wei Luo and Liusuo Wu and Wei Bao and Peng Cheng},
  journal= {arXiv preprint arXiv:2001.10151},
  year   = {2020}
}

备注

6 pages, 5 figures

Ba(Fe$_{0.92-x}$Co$_{0.08}$V$_x$)$_2$As$_2$中超导与反铁磁序的演化

摘要

关键词

引用

备注

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