1H NMR study of hydrogenated YBa2Cu3O6.9 and Bi2Sr2CaCu2O8+δ

K. Morimoto; T. Takabatake; W. Ye; S. Orimo; T. Hihara; H. Fujii

doi:10.1016/0921-4534(89)90158-5

¹H NMR study of hydrogenated YBa₂Cu₃O_6.9 and Bi₂Sr₂CaCu₂O_8+δ

K. Morimoto, T. Takabatake, W. Ye, S. Orimo, T. Hihara, H. Fujii

Hiroshima University

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

6 Citations (Scopus)

Abstract

The nuclear spin-lattice relaxation time of ¹H in YBa₂Cu₃O_6.9H_x (x=0.18 and 0.63) abd Bi₂Sr₂CaCu₂O_8+δH_x (x=0.24 and 0.42) has been measured at 29 and 58 MHz in the temperature range between 77 and 294 K. In these compounds, the relaxation is not of a single-exponential type, but consists of two components with very short and long relaxation times. With decreasing temperature from 294 to 100 K, the relaxation rate of the long-component in each sample decreases by one order of magnitude. The relaxation rate in YBa₂Cu₃O_6.9H_0.18 is enhanced by a factor of two just below T_c and then sharply decreases, whereas that in Bi₂Sr₂CaCu₂O_8+δH_0.24 drops without showing such an enhancement. The appearance of the enhancement in the former may be ascribed to the rather weak interaction of ¹H in the Cu(1)-O plane with electron spin-fluctuations in the Cu(2)-O₂ plane.

Original language	English
Pages (from-to)	849-853
Number of pages	5
Journal	Physica C: Superconductivity and its Applications
Volume	159
Issue number	6
DOIs	https://doi.org/10.1016/0921-4534(89)90158-5
Publication status	Published - 1989 Aug 1

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title = "1H NMR study of hydrogenated YBa2Cu3O6.9 and Bi2Sr2CaCu2O8+δ",

abstract = "The nuclear spin-lattice relaxation time of 1H in YBa2Cu3O6.9Hx (x=0.18 and 0.63) abd Bi2Sr2CaCu2O8+δHx (x=0.24 and 0.42) has been measured at 29 and 58 MHz in the temperature range between 77 and 294 K. In these compounds, the relaxation is not of a single-exponential type, but consists of two components with very short and long relaxation times. With decreasing temperature from 294 to 100 K, the relaxation rate of the long-component in each sample decreases by one order of magnitude. The relaxation rate in YBa2Cu3O6.9H0.18 is enhanced by a factor of two just below Tc and then sharply decreases, whereas that in Bi2Sr2CaCu2O8+δH0.24 drops without showing such an enhancement. The appearance of the enhancement in the former may be ascribed to the rather weak interaction of 1H in the Cu(1)-O plane with electron spin-fluctuations in the Cu(2)-O2 plane.",

author = "K. Morimoto and T. Takabatake and W. Ye and S. Orimo and T. Hihara and H. Fujii",

year = "1989",

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T1 - 1H NMR study of hydrogenated YBa2Cu3O6.9 and Bi2Sr2CaCu2O8+δ

AU - Morimoto, K.

AU - Takabatake, T.

AU - Ye, W.

AU - Orimo, S.

AU - Hihara, T.

AU - Fujii, H.

PY - 1989/8/1

Y1 - 1989/8/1

N2 - The nuclear spin-lattice relaxation time of 1H in YBa2Cu3O6.9Hx (x=0.18 and 0.63) abd Bi2Sr2CaCu2O8+δHx (x=0.24 and 0.42) has been measured at 29 and 58 MHz in the temperature range between 77 and 294 K. In these compounds, the relaxation is not of a single-exponential type, but consists of two components with very short and long relaxation times. With decreasing temperature from 294 to 100 K, the relaxation rate of the long-component in each sample decreases by one order of magnitude. The relaxation rate in YBa2Cu3O6.9H0.18 is enhanced by a factor of two just below Tc and then sharply decreases, whereas that in Bi2Sr2CaCu2O8+δH0.24 drops without showing such an enhancement. The appearance of the enhancement in the former may be ascribed to the rather weak interaction of 1H in the Cu(1)-O plane with electron spin-fluctuations in the Cu(2)-O2 plane.

AB - The nuclear spin-lattice relaxation time of 1H in YBa2Cu3O6.9Hx (x=0.18 and 0.63) abd Bi2Sr2CaCu2O8+δHx (x=0.24 and 0.42) has been measured at 29 and 58 MHz in the temperature range between 77 and 294 K. In these compounds, the relaxation is not of a single-exponential type, but consists of two components with very short and long relaxation times. With decreasing temperature from 294 to 100 K, the relaxation rate of the long-component in each sample decreases by one order of magnitude. The relaxation rate in YBa2Cu3O6.9H0.18 is enhanced by a factor of two just below Tc and then sharply decreases, whereas that in Bi2Sr2CaCu2O8+δH0.24 drops without showing such an enhancement. The appearance of the enhancement in the former may be ascribed to the rather weak interaction of 1H in the Cu(1)-O plane with electron spin-fluctuations in the Cu(2)-O2 plane.

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¹H NMR study of hydrogenated YBa₂Cu₃O_6.9 and Bi₂Sr₂CaCu₂O_8+δ

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