Spin-gap behavior in underdoped TISr2(Lu0.7Ca0.3)Cu2Oy: 63Cu and 205TI NMR studies

K. Magishi, Y. Kitaoka, Guo-Qing Zheng, K. Asayama, T. Kondo, Y. Shimakawa, T. Manako, Y. Kubo

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Measurements of the Knight shift of 63Cu and the nuclear spin-lattice relaxation rate of 205TI, 205(1/T1), have revealed that TISr2(Lu0.7Ca0.3)Cu2Oy with Tc=40 K consisting of the bi-CuO2 layer without the CuO chain is in the underdoped regime with the spin pseudogap, which is evidenced by the significant decrease of 205(1/T1T) below 120 K far above Tc and the decrease of the 63Cu spin Knight shift upon cooling. Although the disorder is introduced into the adjacent Ca layers to the CuO2 plane by the substitution of Lu for Ca sites, the spin-gap behavior is presented not to be masked. From this result, it is suggested that the absence of the spin-gap behavior in La2-xSrxCuO4 is neither due to the disorder introduced into the adjacent LaO layers to the CuO2 plane by the substitution of Sr for La sites nor the absence of the CuO chain.

Original languageEnglish
Pages (from-to)3070-3073
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume54
Issue number5
Publication statusPublished - 1996
Externally publishedYes

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Substitution reactions
Nuclear magnetic resonance
nuclear magnetic resonance
Spin-lattice relaxation
disorders
substitutes
Cooling
spin-lattice relaxation
nuclear spin
cooling

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Magishi, K., Kitaoka, Y., Zheng, G-Q., Asayama, K., Kondo, T., Shimakawa, Y., ... Kubo, Y. (1996). Spin-gap behavior in underdoped TISr2(Lu0.7Ca0.3)Cu2Oy: 63Cu and 205TI NMR studies. Physical Review B - Condensed Matter and Materials Physics, 54(5), 3070-3073.

Spin-gap behavior in underdoped TISr2(Lu0.7Ca0.3)Cu2Oy : 63Cu and 205TI NMR studies. / Magishi, K.; Kitaoka, Y.; Zheng, Guo-Qing; Asayama, K.; Kondo, T.; Shimakawa, Y.; Manako, T.; Kubo, Y.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 54, No. 5, 1996, p. 3070-3073.

Research output: Contribution to journalArticle

Magishi, K, Kitaoka, Y, Zheng, G-Q, Asayama, K, Kondo, T, Shimakawa, Y, Manako, T & Kubo, Y 1996, 'Spin-gap behavior in underdoped TISr2(Lu0.7Ca0.3)Cu2Oy: 63Cu and 205TI NMR studies', Physical Review B - Condensed Matter and Materials Physics, vol. 54, no. 5, pp. 3070-3073.
Magishi, K. ; Kitaoka, Y. ; Zheng, Guo-Qing ; Asayama, K. ; Kondo, T. ; Shimakawa, Y. ; Manako, T. ; Kubo, Y. / Spin-gap behavior in underdoped TISr2(Lu0.7Ca0.3)Cu2Oy : 63Cu and 205TI NMR studies. In: Physical Review B - Condensed Matter and Materials Physics. 1996 ; Vol. 54, No. 5. pp. 3070-3073.
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T2 - 63Cu and 205TI NMR studies

AU - Magishi, K.

AU - Kitaoka, Y.

AU - Zheng, Guo-Qing

AU - Asayama, K.

AU - Kondo, T.

AU - Shimakawa, Y.

AU - Manako, T.

AU - Kubo, Y.

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N2 - Measurements of the Knight shift of 63Cu and the nuclear spin-lattice relaxation rate of 205TI, 205(1/T1), have revealed that TISr2(Lu0.7Ca0.3)Cu2Oy with Tc=40 K consisting of the bi-CuO2 layer without the CuO chain is in the underdoped regime with the spin pseudogap, which is evidenced by the significant decrease of 205(1/T1T) below 120 K far above Tc and the decrease of the 63Cu spin Knight shift upon cooling. Although the disorder is introduced into the adjacent Ca layers to the CuO2 plane by the substitution of Lu for Ca sites, the spin-gap behavior is presented not to be masked. From this result, it is suggested that the absence of the spin-gap behavior in La2-xSrxCuO4 is neither due to the disorder introduced into the adjacent LaO layers to the CuO2 plane by the substitution of Sr for La sites nor the absence of the CuO chain.

AB - Measurements of the Knight shift of 63Cu and the nuclear spin-lattice relaxation rate of 205TI, 205(1/T1), have revealed that TISr2(Lu0.7Ca0.3)Cu2Oy with Tc=40 K consisting of the bi-CuO2 layer without the CuO chain is in the underdoped regime with the spin pseudogap, which is evidenced by the significant decrease of 205(1/T1T) below 120 K far above Tc and the decrease of the 63Cu spin Knight shift upon cooling. Although the disorder is introduced into the adjacent Ca layers to the CuO2 plane by the substitution of Lu for Ca sites, the spin-gap behavior is presented not to be masked. From this result, it is suggested that the absence of the spin-gap behavior in La2-xSrxCuO4 is neither due to the disorder introduced into the adjacent LaO layers to the CuO2 plane by the substitution of Sr for La sites nor the absence of the CuO chain.

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