Absence of Edge Localized Moments in the Doped Spin-Peierls System CuGe1xSixO3

J. Kikuchi, T. Matsuoka, K. Motoya, T. Yamauchi, and Y. Ueda
Phys. Rev. Lett. 88, 037603 – Published 7 January 2002
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Abstract

We report the observation of nuclear quadrupole resonance (NQR) of Cu from the sites near the doping center in the spin-Peierls system CuGe1xSixO3. The signal appears as the satellites in the Cu NQR spectrum, and has a suppressed nuclear spin-lattice relaxation rate indicative of a singlet correlation rather than an enhanced magnetic correlation near the doping center. Signal loss of Cu nuclei with no neighboring Si is also observed. We conclude from these observations that the doping-induced moments are not in the vicinity of the doping center but rather away from it.

  • Received 2 August 2001

DOI:https://doi.org/10.1103/PhysRevLett.88.037603

©2002 American Physical Society

Authors & Affiliations

J. Kikuchi1,*, T. Matsuoka1, K. Motoya1, T. Yamauchi2, and Y. Ueda2

  • 1Department of Physics, Science University of Tokyo, Yamazaki, Noda, Chiba 278-8510, Japan
  • 2Institute for Solid State Physics, University of Tokyo, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan

  • *Electronic address: kikuchi@ph.noda.sut.ac.jp

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Vol. 88, Iss. 3 — 21 January 2002

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