Observation of modulated magnetic long-range order in La1.88Sr0.12CuO4

Takao Suzuki, T. Goto, K. Chiba, T. Shinoda, T. Fukase, H. Kimura, K. Yamada, M. Ohashi, Y. Yamaguchi

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Abstract

Magnetic superlattice peaks are observed in single-crystal neutron-diffraction measurements on orthorhombic La1.88Sr0.12CuO4 at reciprocal points of (1/2±∈,1/2,0) and (1/2,1/2±∈,0) in the tetragonal notation where ∈=0.126±0.003. The La NMR measurement reveals a broadening of the field-swept spectrum below ∼45 K corresponding to the existence of magnetic order. The remarkable softening of longitudinal sound waves along [110] is observed in the same crystal. The features observed in the neutron diffraction, NMR, and ultrasonic measurements suggest that the dynamical incommensurate spin correlation is pinned by a lattice instability toward the low-temperature tetragonal phase.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume57
Issue number6
Publication statusPublished - 1998 Feb 1
Externally publishedYes

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ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Suzuki, T., Goto, T., Chiba, K., Shinoda, T., Fukase, T., Kimura, H., ... Yamaguchi, Y. (1998). Observation of modulated magnetic long-range order in La1.88Sr0.12CuO4. Physical Review B - Condensed Matter and Materials Physics, 57(6).