63Cu NMR study in high-Tc superconductor TlSr2(Lu1-xCax)Cu2oy

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

Research output: Contribution to journalArticle

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Abstract

63Cu NMR measuements have been carried out in heavily-doped TlSr2CaCu2O7-δ with Tc = 70K, 52K and OK, respectively, and in lightly-doped TlSr2(Lu0.7Ca0.3)Cu2Oy with Tc = 40K under a magnetic field of 11T. From a systematic measurement of the nuclear-spin lattice relaxation rate, 63(1/T1), the antiferromagnetic (AF) spin correlation is suppressed with increasing hole content, i.e. with decreasing Tc as in the case of Tl2Ba2CuO6+y. From the Knight shift measurement, it has been found that the T-independent behavior of the spin susceptibility above Tc in heavily-doped system changes into a T-decreasing one in the lightly-doped TlSr2(Lu0.7Ca0.3)Cu2Oy, which is the same as in YBa2Cu3O6.63.

Original languageEnglish
Pages (from-to)1631-1634
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume235-240
Issue numberPART 3
DOIs
Publication statusPublished - 1994
Externally publishedYes

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Superconducting materials
Nuclear magnetic resonance
nuclear magnetic resonance
Spin-lattice relaxation
spin-lattice relaxation
nuclear spin
Magnetic fields
magnetic permeability
magnetic fields

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Magishi, K., Zheng, G-Q., Kitaoka, Y., Kondo, T., Shimakawa, Y., Manako, T., & Kubo, Y. (1994). 63Cu NMR study in high-Tc superconductor TlSr2(Lu1-xCax)Cu2oy. Physica C: Superconductivity and its Applications, 235-240(PART 3), 1631-1634. https://doi.org/10.1016/0921-4534(94)92041-9

63Cu NMR study in high-Tc superconductor TlSr2(Lu1-xCax)Cu2oy. / Magishi, K.; Zheng, Guo-Qing; Kitaoka, Y.; Kondo, T.; Shimakawa, Y.; Manako, T.; Kubo, Y.

In: Physica C: Superconductivity and its Applications, Vol. 235-240, No. PART 3, 1994, p. 1631-1634.

Research output: Contribution to journalArticle

Magishi, K, Zheng, G-Q, Kitaoka, Y, Kondo, T, Shimakawa, Y, Manako, T & Kubo, Y 1994, '63Cu NMR study in high-Tc superconductor TlSr2(Lu1-xCax)Cu2oy', Physica C: Superconductivity and its Applications, vol. 235-240, no. PART 3, pp. 1631-1634. https://doi.org/10.1016/0921-4534(94)92041-9
Magishi, K. ; Zheng, Guo-Qing ; Kitaoka, Y. ; Kondo, T. ; Shimakawa, Y. ; Manako, T. ; Kubo, Y. / 63Cu NMR study in high-Tc superconductor TlSr2(Lu1-xCax)Cu2oy. In: Physica C: Superconductivity and its Applications. 1994 ; Vol. 235-240, No. PART 3. pp. 1631-1634.
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AU - Shimakawa, Y.

AU - Manako, T.

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N2 - 63Cu NMR measuements have been carried out in heavily-doped TlSr2CaCu2O7-δ with Tc = 70K, 52K and OK, respectively, and in lightly-doped TlSr2(Lu0.7Ca0.3)Cu2Oy with Tc = 40K under a magnetic field of 11T. From a systematic measurement of the nuclear-spin lattice relaxation rate, 63(1/T1), the antiferromagnetic (AF) spin correlation is suppressed with increasing hole content, i.e. with decreasing Tc as in the case of Tl2Ba2CuO6+y. From the Knight shift measurement, it has been found that the T-independent behavior of the spin susceptibility above Tc in heavily-doped system changes into a T-decreasing one in the lightly-doped TlSr2(Lu0.7Ca0.3)Cu2Oy, which is the same as in YBa2Cu3O6.63.

AB - 63Cu NMR measuements have been carried out in heavily-doped TlSr2CaCu2O7-δ with Tc = 70K, 52K and OK, respectively, and in lightly-doped TlSr2(Lu0.7Ca0.3)Cu2Oy with Tc = 40K under a magnetic field of 11T. From a systematic measurement of the nuclear-spin lattice relaxation rate, 63(1/T1), the antiferromagnetic (AF) spin correlation is suppressed with increasing hole content, i.e. with decreasing Tc as in the case of Tl2Ba2CuO6+y. From the Knight shift measurement, it has been found that the T-independent behavior of the spin susceptibility above Tc in heavily-doped system changes into a T-decreasing one in the lightly-doped TlSr2(Lu0.7Ca0.3)Cu2Oy, which is the same as in YBa2Cu3O6.63.

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