Evolution of magnetism in Ruddlesden-Popper bilayer nickelate revealed by muon spin relaxation

C. Y. Jiang; J. C. Jiao; K. W. Chen; L. Shu; X. Q. Liu; Y. F. Guo; Y. Wang; Z. Y. Zhu

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arxiv 2412.09003 v1 pith:YKB7LQ4H submitted 2024-12-12 cond-mat.str-el cond-mat.supr-con

Evolution of magnetism in Ruddlesden-Popper bilayer nickelate revealed by muon spin relaxation

K. W. Chen , X. Q. Liu , Y. Wang , Z. Y. Zhu , J. C. Jiao , C. Y. Jiang , Y. F. Guo , L. Shu This is my paper

classification cond-mat.str-el cond-mat.supr-con

keywords magneticambientbilayermagnetismmuonpressurerelaxationrevealed

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Here we report the positive muon spin relaxation study on Pr-doped La$_{1.9}$Pr$_{1.1}$Ni$_2$O$_{6.97}$ and oxygen-deficient La$_3$Ni$_2$O$_{6.63}$ polycrystalline under ambient pressure. Zero-field $\mu^+$SR experiments reveal the existence of bulk long-range magnetic order in La$_{1.9}$Pr$_{1.1}$Ni$_2$O$_{6.97}$ with $T_{N}=161\ \rm{K}$, while La$_3$Ni$_2$O$_{6.63}$ exhibits a short-range magnetic ground state with $T_N=30\ \rm{K}$. The magnetic transition width of La$_{1.9}$Pr$_{1.1}$Ni$_2$O$_{6.97}$ revealed by weak-transverse-field $\mu^+$SR is narrower compared to La$_3$Ni$_2$O$_{6.92}$. Our $\mu^+$SR experiment results provide a comprehensive view on the correlation between magnetism and structure perfection in Ruddlesden-Popper bilayer nickelates under ambient pressure.

Evolution of magnetism in Ruddlesden-Popper bilayer nickelate revealed by muon spin relaxation

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