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

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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.

Original languageEnglish
Article number064516
Pages (from-to)645161-645168
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume67
Issue number6
Publication statusPublished - 2003 Feb 1

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Itoh, Y., Machi, T., Kasai, C., Adachi, S., Watanabe, N., Koshizuka, N., & Murakami, M. (2003). Zn-neighbor Cu NQR in Zn-substituted YBa2Cu3O7-δ and YBa2Cu4O8. Physical Review B - Condensed Matter and Materials Physics, 67(6), 645161-645168. [064516].