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

doi:10.1143/JPSJ.66.2870

¹³⁹La-NMR Study on La-based High-T_c Cuprates La_2-xM_xCuO₄ (M=Sr, Ba) around x=0.115 under High Magnetic Field

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

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

The effect of the external field on La-NMR spectra has been studied on La-based high-T_c cuprates La_2-xSr_xCuO₄(x ≈ 0.115) and La_2-xBa_xCuO₄(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 La_2-xSr_xCuO₄ 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 language	English
Pages (from-to)	2870-2874
Number of pages	5
Journal	journal of the physical society of japan
Volume	66
Issue number	9
DOIs	https://doi.org/10.1143/JPSJ.66.2870
Publication status	Published - 1997 Sept
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.66.2870

Cite this

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

abstract = "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.",

keywords = "1/8-issue, LaSrCuO-NMR, Magnetic ordering, Spin-flop",

author = "Takayuki Goto and Kaichiro Chiba and Masakatsu Mori and Takao Suzuki and Katsutoshi Seki and Tetsuo Fukase",

year = "1997",

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T1 - 139La-NMR Study on La-based High-Tc Cuprates La2-xMxCuO4 (M=Sr, Ba) around x=0.115 under High Magnetic Field

AU - Goto, Takayuki

AU - Chiba, Kaichiro

AU - Mori, Masakatsu

AU - Suzuki, Takao

AU - Seki, Katsutoshi

AU - Fukase, Tetsuo

PY - 1997/9

Y1 - 1997/9

N2 - 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.

AB - 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.

KW - 1/8-issue

KW - LaSrCuO-NMR

KW - Magnetic ordering

KW - Spin-flop

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