Spin susceptibility in YBa2Cu4O8: 17O and 63Cu NMR study

G. q. Zheng; Y. Kitaoka; K. Asayama; Y. Kodama

doi:10.1016/0921-4526(93)90768-2

Spin susceptibility in YBa₂Cu₄O₈: ¹⁷O and ⁶³Cu NMR study

G. q. Zheng, Y. Kitaoka, K. Asayama, Y. Kodama

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

3 Citations (Scopus)

Abstract

The ¹⁷O and ⁶³Cu Knight shifts which are coupled to the spin susceptibility have been measured in the CuO₂ plane and the CuO chain in the high-T_c superconductor YBa₂Cu₄O₈. The shifts in the plane decrease with decreasing temperature, with small anomalies at T_c. In the chain, however, the shifts are temperature-independent in the normal state and those associated with the spin susceptibility along the Cu-O bonding decrease distinctly below T_c. Noting that the T-dependent susceptibility is dominated by the planar Cu²⁺, the hyperfine fields at Cu and O were estimated to be H_ab(Cu2)=(185±10) kOe/μ_B and H_c(O 2,3)=(85±8)kOem/μ_B, in agreement with YBa₂Cu₃O₇.

Original language	English
Pages (from-to)	1001-1003
Number of pages	3
Journal	Physica B: Physics of Condensed Matter
Volume	186-188
Issue number	C
DOIs	https://doi.org/10.1016/0921-4526(93)90768-2
Publication status	Published - May 2 1993
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/0921-4526(93)90768-2

Cite this

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title = "Spin susceptibility in YBa2Cu4O8: 17O and 63Cu NMR study",

abstract = "The 17O and 63Cu Knight shifts which are coupled to the spin susceptibility have been measured in the CuO2 plane and the CuO chain in the high-Tc superconductor YBa2Cu4O8. The shifts in the plane decrease with decreasing temperature, with small anomalies at Tc. In the chain, however, the shifts are temperature-independent in the normal state and those associated with the spin susceptibility along the Cu-O bonding decrease distinctly below Tc. Noting that the T-dependent susceptibility is dominated by the planar Cu2+, the hyperfine fields at Cu and O were estimated to be Hab(Cu2)=(185±10) kOe/μB and Hc(O 2,3)=(85±8)kOem/μB, in agreement with YBa2Cu3O7.",

author = "Zheng, {G. q.} and Y. Kitaoka and K. Asayama and Y. Kodama",

note = "Funding Information: This work has been supported in part by a Grant-in-aid from the Ministry of Education, Culture and Science of Japan.",

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doi = "10.1016/0921-4526(93)90768-2",

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TY - JOUR

T1 - Spin susceptibility in YBa2Cu4O8

T2 - 17O and 63Cu NMR study

AU - Zheng, G. q.

AU - Kitaoka, Y.

AU - Asayama, K.

AU - Kodama, Y.

N1 - Funding Information: This work has been supported in part by a Grant-in-aid from the Ministry of Education, Culture and Science of Japan.

PY - 1993/5/2

Y1 - 1993/5/2

N2 - The 17O and 63Cu Knight shifts which are coupled to the spin susceptibility have been measured in the CuO2 plane and the CuO chain in the high-Tc superconductor YBa2Cu4O8. The shifts in the plane decrease with decreasing temperature, with small anomalies at Tc. In the chain, however, the shifts are temperature-independent in the normal state and those associated with the spin susceptibility along the Cu-O bonding decrease distinctly below Tc. Noting that the T-dependent susceptibility is dominated by the planar Cu2+, the hyperfine fields at Cu and O were estimated to be Hab(Cu2)=(185±10) kOe/μB and Hc(O 2,3)=(85±8)kOem/μB, in agreement with YBa2Cu3O7.

AB - The 17O and 63Cu Knight shifts which are coupled to the spin susceptibility have been measured in the CuO2 plane and the CuO chain in the high-Tc superconductor YBa2Cu4O8. The shifts in the plane decrease with decreasing temperature, with small anomalies at Tc. In the chain, however, the shifts are temperature-independent in the normal state and those associated with the spin susceptibility along the Cu-O bonding decrease distinctly below Tc. Noting that the T-dependent susceptibility is dominated by the planar Cu2+, the hyperfine fields at Cu and O were estimated to be Hab(Cu2)=(185±10) kOe/μB and Hc(O 2,3)=(85±8)kOem/μB, in agreement with YBa2Cu3O7.

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JF - Physica B: Physics of Condensed Matter

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Spin susceptibility in YBa₂Cu₄O₈: ¹⁷O and ⁶³Cu NMR study

Abstract

ASJC Scopus subject areas

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