Zn-neighbor Cu NQR in Zn-substituted YBa2Cu3O7-δ and YBa2Cu4O8

Y. Itoh; T. Machi; C. Kasai; S. Adachi; N. Watanabe; N. Koshizuka; M. Murakami

Zn-neighbor Cu NQR in Zn-substituted YBa₂Cu₃O_7-δ and YBa₂Cu₄O₈

Y. Itoh, T. Machi, C. Kasai, S. Adachi, N. Watanabe, N. Koshizuka, M. Murakami

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

Abstract

We studied local electronic states near. Zn in optimally doped YBa₂(Cu_1-xZn_x) ₃O_7-δ and underdoped YBa₂(Cu_1-xZn_x)₄O₈ via satellite signals of plane-site Cu(2) nuclear quadrupole resonance (NQR) spectra. From the relative intensity of Cu NQR spectra, the satellite signals are assigned to Zn-neighbor Cu NQR lines. The Cu nuclear spin-lattice relaxation time of the satellite signal is shorter than that of the main signal, which indicates that the magnetic correlation is locally enhanced near Zn both for the underdoped and the optimally doped systems. The pure YBa₂Cu₄O₈ is a stoichiometric, homogenous, underdoped electronic system; nevertheless, the Zn-induced inhomogeneous magnetic response in the CuO₂ plane is more marked than that of the optimally doped YBa₂Cu₃O_7-δ.

Original language	English
Article number	064516
Pages (from-to)	645161-645168
Number of pages	8
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	67
Issue number	6
Publication status	Published - 2003 Feb 1
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Zn-neighbor Cu NQR in Zn-substituted YBa2Cu3O7-δ and YBa2Cu4O8",

abstract = "We studied local electronic states near. Zn in optimally doped YBa2(Cu1-xZnx) 3O7-δ and underdoped YBa2(Cu1-xZnx)4O8 via satellite signals of plane-site Cu(2) nuclear quadrupole resonance (NQR) spectra. From the relative intensity of Cu NQR spectra, the satellite signals are assigned to Zn-neighbor Cu NQR lines. The Cu nuclear spin-lattice relaxation time of the satellite signal is shorter than that of the main signal, which indicates that the magnetic correlation is locally enhanced near Zn both for the underdoped and the optimally doped systems. The pure YBa2Cu4O8 is a stoichiometric, homogenous, underdoped electronic system; nevertheless, the Zn-induced inhomogeneous magnetic response in the CuO2 plane is more marked than that of the optimally doped YBa2Cu3O7-δ.",

author = "Y. Itoh and T. Machi and C. Kasai and S. Adachi and N. Watanabe and N. Koshizuka and M. Murakami",

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TY - JOUR

T1 - Zn-neighbor Cu NQR in Zn-substituted YBa2Cu3O7-δ and YBa2Cu4O8

AU - Itoh, Y.

AU - Machi, T.

AU - Kasai, C.

AU - Adachi, S.

AU - Watanabe, N.

AU - Koshizuka, N.

AU - Murakami, M.

PY - 2003/2/1

Y1 - 2003/2/1

N2 - We studied local electronic states near. Zn in optimally doped YBa2(Cu1-xZnx) 3O7-δ and underdoped YBa2(Cu1-xZnx)4O8 via satellite signals of plane-site Cu(2) nuclear quadrupole resonance (NQR) spectra. From the relative intensity of Cu NQR spectra, the satellite signals are assigned to Zn-neighbor Cu NQR lines. The Cu nuclear spin-lattice relaxation time of the satellite signal is shorter than that of the main signal, which indicates that the magnetic correlation is locally enhanced near Zn both for the underdoped and the optimally doped systems. The pure YBa2Cu4O8 is a stoichiometric, homogenous, underdoped electronic system; nevertheless, the Zn-induced inhomogeneous magnetic response in the CuO2 plane is more marked than that of the optimally doped YBa2Cu3O7-δ.

AB - We studied local electronic states near. Zn in optimally doped YBa2(Cu1-xZnx) 3O7-δ and underdoped YBa2(Cu1-xZnx)4O8 via satellite signals of plane-site Cu(2) nuclear quadrupole resonance (NQR) spectra. From the relative intensity of Cu NQR spectra, the satellite signals are assigned to Zn-neighbor Cu NQR lines. The Cu nuclear spin-lattice relaxation time of the satellite signal is shorter than that of the main signal, which indicates that the magnetic correlation is locally enhanced near Zn both for the underdoped and the optimally doped systems. The pure YBa2Cu4O8 is a stoichiometric, homogenous, underdoped electronic system; nevertheless, the Zn-induced inhomogeneous magnetic response in the CuO2 plane is more marked than that of the optimally doped YBa2Cu3O7-δ.

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