Evidence of spin density waves in La$_3$Ni$_2$O$_{7-\delta}$

Kaiwen Chen; Xiangqi Liu; Jiachen Jiao; Muyuan Zou; Yixuan Luo; Qiong Wu; Ningyuan Zhang; Yanfeng Guo; Lei Shu

Evidence of spin density waves in La$_3$Ni$_2$O$_{7-\delta}$

Strongly Correlated Electrons 2024-05-14 v2 Superconductivity

Authors: Kaiwen Chen , Xiangqi Liu , Jiachen Jiao , Muyuan Zou , Yixuan Luo , Qiong Wu , Ningyuan Zhang , Yanfeng Guo , Lei Shu

View on arXiv ↗ PDF ↗

Abstract

The recently discovered superconductivity with critical temperature $T_c$ up to 80 K in the double-layer Nickelate La $_3$ Ni $_2$ O $_{7-\delta}$ under pressure has drawn great attention. Here we report the positive muon spin relaxation ( $\mu^+$ SR) study of polycrystalline La $_3$ Ni $_2$ O $_{6.92}$ under ambient pressure. Zero-field $\mu^+$ SR experiments reveal the existence of magnetic order in La $_3$ Ni $_2$ O $_{6.92}$ with $T_{N}=154\ \rm{K}$ . The weak transverse field $\mu^+$ SR measurements confirms the bulk nature of magnetism. In addition, a small quantity of oxygen deficiencies can greatly broaden the internal magnetic field distribution sensed by muons.

Keywords

spin density wave nickelate muon spin relaxation magnetic order superconductivity

Cite

@article{arxiv.2311.15717,
  title  = {Evidence of spin density waves in La$_3$Ni$_2$O$_{7-\delta}$},
  author = {Kaiwen Chen and Xiangqi Liu and Jiachen Jiao and Muyuan Zou and Yixuan Luo and Qiong Wu and Ningyuan Zhang and Yanfeng Guo and Lei Shu},
  journal= {arXiv preprint arXiv:2311.15717},
  year   = {2024}
}

Evidence of spin density waves in La$_3$Ni$_2$O$_{7-\delta}$

Abstract

Keywords

Cite

Related papers