Novel phase separation and spin dynamics of lightly doped La 2-xSr2CuO4 robed by La-nuclear quadrupole resonance

K. Ishida; H. Aya; Y. Tokunaga; H. Kotegawa; Y. Kitaoka; M. Fujita; K. Yamada

doi:10.1103/PhysRevLett.92.257001

Novel phase separation and spin dynamics of lightly doped La _2-xSr₂CuO₄ robed by La-nuclear quadrupole resonance

K. Ishida, H. Aya, Y. Tokunaga, H. Kotegawa, Y. Kitaoka, M. Fujita, K. Yamada

IMR - Materials Property Division

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

14 Citations (Scopus)

Abstract

The magnetic properties in the slightly hole-doped Mott-insulator La _2-xSr_xcuO₄ were reported. It was observed that at x=0.018, the antiferromagnetic (AFM) La-nuclear quadrupole resonance (La-NQR) spectrum affected by internal fields comes out as the temperature decreases below T_N∼150 K. The nonmagnetic La-NQR spectrum were observed down to a temperature T_f∼20 K ath which the nuclear-relaxation rate had a pronounced peak. It was suggested that the novel phase separation of the nonmagnetic and AFM was due to the partial destruction of the AFM phase caused by mobile holes via the formation of an extended spin-singlet state between Cu-derived spins and hole spins.

Original language	English
Article number	257001
Pages (from-to)	257001-1-257001-4
Journal	Physical Review Letters
Volume	92
Issue number	25 I
DOIs	https://doi.org/10.1103/PhysRevLett.92.257001
Publication status	Published - 2004 Jun 25

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10.1103/PhysRevLett.92.257001

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title = "Novel phase separation and spin dynamics of lightly doped La 2-xSr2CuO4 robed by La-nuclear quadrupole resonance",

abstract = "The magnetic properties in the slightly hole-doped Mott-insulator La 2-xSrxcuO4 were reported. It was observed that at x=0.018, the antiferromagnetic (AFM) La-nuclear quadrupole resonance (La-NQR) spectrum affected by internal fields comes out as the temperature decreases below TN∼150 K. The nonmagnetic La-NQR spectrum were observed down to a temperature Tf∼20 K ath which the nuclear-relaxation rate had a pronounced peak. It was suggested that the novel phase separation of the nonmagnetic and AFM was due to the partial destruction of the AFM phase caused by mobile holes via the formation of an extended spin-singlet state between Cu-derived spins and hole spins.",

author = "K. Ishida and H. Aya and Y. Tokunaga and H. Kotegawa and Y. Kitaoka and M. Fujita and K. Yamada",

note = "Funding Information: The authors thank H. Kohno, K. Miyake, and M. Matsuda for valuable discussions. This work was supported by the COE Research (10CE2004) in Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sport, Science, and Technology of Japan (MEXT), by the Grants-in-Aid for Scientific Research from Japan Society for Promotion of Science (JSPS), and by MEXT.",

year = "2004",

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doi = "10.1103/PhysRevLett.92.257001",

language = "English",

volume = "92",

pages = "257001--1--257001--4",

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T1 - Novel phase separation and spin dynamics of lightly doped La 2-xSr2CuO4 robed by La-nuclear quadrupole resonance

AU - Ishida, K.

AU - Aya, H.

AU - Tokunaga, Y.

AU - Kotegawa, H.

AU - Kitaoka, Y.

AU - Fujita, M.

AU - Yamada, K.

N1 - Funding Information: The authors thank H. Kohno, K. Miyake, and M. Matsuda for valuable discussions. This work was supported by the COE Research (10CE2004) in Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sport, Science, and Technology of Japan (MEXT), by the Grants-in-Aid for Scientific Research from Japan Society for Promotion of Science (JSPS), and by MEXT.

PY - 2004/6/25

Y1 - 2004/6/25

N2 - The magnetic properties in the slightly hole-doped Mott-insulator La 2-xSrxcuO4 were reported. It was observed that at x=0.018, the antiferromagnetic (AFM) La-nuclear quadrupole resonance (La-NQR) spectrum affected by internal fields comes out as the temperature decreases below TN∼150 K. The nonmagnetic La-NQR spectrum were observed down to a temperature Tf∼20 K ath which the nuclear-relaxation rate had a pronounced peak. It was suggested that the novel phase separation of the nonmagnetic and AFM was due to the partial destruction of the AFM phase caused by mobile holes via the formation of an extended spin-singlet state between Cu-derived spins and hole spins.

AB - The magnetic properties in the slightly hole-doped Mott-insulator La 2-xSrxcuO4 were reported. It was observed that at x=0.018, the antiferromagnetic (AFM) La-nuclear quadrupole resonance (La-NQR) spectrum affected by internal fields comes out as the temperature decreases below TN∼150 K. The nonmagnetic La-NQR spectrum were observed down to a temperature Tf∼20 K ath which the nuclear-relaxation rate had a pronounced peak. It was suggested that the novel phase separation of the nonmagnetic and AFM was due to the partial destruction of the AFM phase caused by mobile holes via the formation of an extended spin-singlet state between Cu-derived spins and hole spins.

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JF - Physical Review Letters

IS - 25 I

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ER -

Novel phase separation and spin dynamics of lightly doped La _2-xSr₂CuO₄ robed by La-nuclear quadrupole resonance

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