Knight shift and nuclear relaxation rate in layered cuprate oxides

M. Tachiki; Saburo Takahashi

doi:10.1016/0921-4534(91)90957-Z

Knight shift and nuclear relaxation rate in layered cuprate oxides

M. Tachiki, Saburo Takahashi

Materials Property Division

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

1 Citation (Scopus)

Abstract

We calculate the spin-Knight shifts and the nuclear relaxation rates of the Cu and O ions in the superconducting state of YBa₂Cu₃O₇, using a layer model in which some pairing interaction generates superconductivity in the CuO₂-plane layers and the interlayer transfer interaction induces weak superconductivity in other layers. If the experimental values of the spin-Knight shift and the nuclear relaxation rate are normalized at T_c, these values for the Cu and O ions in each layer are on universal curves in all temperature range of the superconducting state. The normalized spin-Knight shifts and relaxation rates of the Cu and O ions in the plane layer decrease much faster than those in the chain layer in the superconducting state. The present theoretical result well explains the temperature dependence of the normalized spin-Knight shift and nuclear relaxation rate.

Original language	English
Pages (from-to)	1661-1662
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	185-189
Issue number	PART 3
DOIs	https://doi.org/10.1016/0921-4534(91)90957-Z
Publication status	Published - 1991 Dec 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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abstract = "We calculate the spin-Knight shifts and the nuclear relaxation rates of the Cu and O ions in the superconducting state of YBa2Cu3O7, using a layer model in which some pairing interaction generates superconductivity in the CuO2-plane layers and the interlayer transfer interaction induces weak superconductivity in other layers. If the experimental values of the spin-Knight shift and the nuclear relaxation rate are normalized at Tc, these values for the Cu and O ions in each layer are on universal curves in all temperature range of the superconducting state. The normalized spin-Knight shifts and relaxation rates of the Cu and O ions in the plane layer decrease much faster than those in the chain layer in the superconducting state. The present theoretical result well explains the temperature dependence of the normalized spin-Knight shift and nuclear relaxation rate.",

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AU - Takahashi, Saburo

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AB - We calculate the spin-Knight shifts and the nuclear relaxation rates of the Cu and O ions in the superconducting state of YBa2Cu3O7, using a layer model in which some pairing interaction generates superconductivity in the CuO2-plane layers and the interlayer transfer interaction induces weak superconductivity in other layers. If the experimental values of the spin-Knight shift and the nuclear relaxation rate are normalized at Tc, these values for the Cu and O ions in each layer are on universal curves in all temperature range of the superconducting state. The normalized spin-Knight shifts and relaxation rates of the Cu and O ions in the plane layer decrease much faster than those in the chain layer in the superconducting state. The present theoretical result well explains the temperature dependence of the normalized spin-Knight shift and nuclear relaxation rate.

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Knight shift and nuclear relaxation rate in layered cuprate oxides

Abstract

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