Magnetic Ground State of Pr$_{0.89}$LaCe$_{0.11}$CuO$_{4+α-δ}$ with Varied Oxygen Depletion Probed by Muon Spin Relaxation

Ryosuke Kadono; Kazuki Ohishi; Akihiro Koda; Wataru Higemoto; Kenji M. Kojima; Shin-ichi Kuroshima; Masaki Fujita; Kazyoshi Yamada

doi:10.1143/JPSJ.72.2955

paper

Magnetic Ground State of Pr $_{0.89}$ LaCe $_{0.11}$ CuO $_{4 + α - δ}$ with Varied Oxygen Depletion Probed by Muon Spin Relaxation

arXiv:cond-mat/0305548 · doi:10.1143/JPSJ.72.2955

Abstract

The magnetic ground state of an electron-doped cuprate superconductor Pr $_{1 - x}$ LaCe $_{x}$ CuO $_{4 + α - δ}$ ( $x = 0.11, α ≃ 0.04$ ) has been studied by means of muon spin rotation/relaxation (\msr) over a wide variety of oxygen depletion, $0.03 \leq δ \leq 0.12$ . Appearance of weak random magnetism over entire crystal volume has been revealed by a slow exponential relaxation. The absence of $δ$ -dependence for the random magnetism and the multiplet pattern of muon Knight shift at higher fields strongly suggest that the random moments are associated with excited Pr $^{3 +}$ ions under crystal electric field.

arXiv comment6 pages, 4 figures, submitted to J. Phys. Soc. Jpn

References in corpus (1)

Magnetic and superconducting phase diagram of electron-doped Pr $_{1 - x}$ LaCe $_{x}$ CuO $_{4}$

Magnetic Ground State of Pr0.89​LaCe0.11​CuO4+α−δ​ with Varied Oxygen Depletion Probed by Muon Spin Relaxation

Abstract

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Magnetic Ground State of Pr $_{0.89}$ LaCe $_{0.11}$ CuO $_{4 + α - δ}$ with Varied Oxygen Depletion Probed by Muon Spin Relaxation