139La-NMR study of spin-flop and spin structure in La2-xSrxCuO4(x ∼ 1/8)

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

doi:10.1023/a:1022558809087

¹³⁹La-NMR study of spin-flop and spin structure in La_2-xSr_xCuO₄(x ∼ 1/8)

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

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

5 Citations (Scopus)

Abstract

The external field dependence of the hyperfine field at La-site has been studied on La_2-xSr_xCuO₄(x=0.115) and La_2-xBa_xCuO₄(x=0.125), where the magnetic ordering in Cu-3d spins exists at low temperature. In La_1.885Sr_0.115CuO₄, a significant decrease in the resonance line width was observed above a field of Hc ≈ 7.5T, which is the direct evidence of the spin-flop in the canted-spin system with Dzyaloshinski-Moriya interaction. The spin-flop field H_c of 7.5T is slightly lower than that in La₂CuO₄(H_c ≈ 10T), reflecting the decrease of the tilting angle of the CuO₆ octahedra by the substitution of Sr²⁺ ion for La-site.

Original language	English
Pages (from-to)	479-483
Number of pages	5
Journal	Journal of Low Temperature Physics
Volume	117
Issue number	3-4
DOIs	https://doi.org/10.1023/a:1022558809087
Publication status	Published - 1999 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Condensed Matter Physics

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title = "139La-NMR study of spin-flop and spin structure in La2-xSrxCuO4(x ∼ 1/8)",

abstract = "The external field dependence of the hyperfine field at La-site has been studied on La2-xSrxCuO4(x=0.115) and La2-xBaxCuO4(x=0.125), where the magnetic ordering in Cu-3d spins exists at low temperature. In La1.885Sr0.115CuO4, a significant decrease in the resonance line width was observed above a field of Hc ≈ 7.5T, which is the direct evidence of the spin-flop in the canted-spin system with Dzyaloshinski-Moriya interaction. The spin-flop field Hc of 7.5T is slightly lower than that in La2CuO4(Hc ≈ 10T), reflecting the decrease of the tilting angle of the CuO6 octahedra by the substitution of Sr2+ ion for La-site.",

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

year = "1999",

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language = "English",

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T1 - 139La-NMR study of spin-flop and spin structure in La2-xSrxCuO4(x ∼ 1/8)

AU - Chiba, Kaichiro

AU - Goto, Takayuki

AU - Mori, Masakatsu

AU - Suzuki, Takao

AU - Seki, Katsutoshi

AU - Fukase, Tetsuo

PY - 1999/1/1

Y1 - 1999/1/1

N2 - The external field dependence of the hyperfine field at La-site has been studied on La2-xSrxCuO4(x=0.115) and La2-xBaxCuO4(x=0.125), where the magnetic ordering in Cu-3d spins exists at low temperature. In La1.885Sr0.115CuO4, a significant decrease in the resonance line width was observed above a field of Hc ≈ 7.5T, which is the direct evidence of the spin-flop in the canted-spin system with Dzyaloshinski-Moriya interaction. The spin-flop field Hc of 7.5T is slightly lower than that in La2CuO4(Hc ≈ 10T), reflecting the decrease of the tilting angle of the CuO6 octahedra by the substitution of Sr2+ ion for La-site.

AB - The external field dependence of the hyperfine field at La-site has been studied on La2-xSrxCuO4(x=0.115) and La2-xBaxCuO4(x=0.125), where the magnetic ordering in Cu-3d spins exists at low temperature. In La1.885Sr0.115CuO4, a significant decrease in the resonance line width was observed above a field of Hc ≈ 7.5T, which is the direct evidence of the spin-flop in the canted-spin system with Dzyaloshinski-Moriya interaction. The spin-flop field Hc of 7.5T is slightly lower than that in La2CuO4(Hc ≈ 10T), reflecting the decrease of the tilting angle of the CuO6 octahedra by the substitution of Sr2+ ion for La-site.

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ER -

¹³⁹La-NMR study of spin-flop and spin structure in La_2-xSr_xCuO₄(x ∼ 1/8)

Abstract

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