139La-NMR Study on La-based High-Tc Cuprates La2-xMxCuO4 (M=Sr, Ba) around x=0.115 under High Magnetic Field

Takayuki Goto, Kaichiro Chiba, Masakatsu Mori, Takao Suzuki, Katsutoshi Seki, Tetsuo Fukase

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17 Citations (Scopus)


The effect of the external field on La-NMR spectra has been studied on La-based high-Tc cuprates La2-xSrxCuO4(x ≈ 0.115) and La2-xBaxCuO4(x=0.125), where the magnetic ordering in Cu-3d spin exists at low temperature. In the magnetically ordered state, the broadening in the resonance line was observed, reflecting the hyperfine field at the La-site contributed by the Cu-3d spins. By applying a high magnetic field of 15 T, this broadening in La2-xSrxCuO4 showed a significant shrink, which is interpreted as the spin-flop in the canted-spin system with the Dzyaloshinski-Moriya interaction. A model is proposed to explain both this spin-flop and the previously-reported anomalous field dependence of the structural instability in this system.

Original languageEnglish
Pages (from-to)2870-2874
Number of pages5
Journaljournal of the physical society of japan
Issue number9
Publication statusPublished - 1997 Sep
Externally publishedYes


  • 1/8-issue
  • LaSrCuO-NMR
  • Magnetic ordering
  • Spin-flop

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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