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APS » Journals » Phys. Rev. Lett. » Volume 71 » Issue 24
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Phys. Rev. Lett. 71, 4059–4062 (1993)

Effects of substitution of Zn for Cu in the spin-Peierls cuprate, CuGeO3: The suppression of the spin-Peierls transition and the occurrence of a new spin-glass state

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M. Hase, I. Terasaki, Y. Sasago, and K. Uchinokura
Department of Applied Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan

H. Obara
Electrotechnical Laboratory, 1-1-4 Umezono, Tsukuba-shi, Ibaraki 305, Japan

Received 3 March 1993; published in the issue dated 13 December 1993

The magnetic susceptibilities of polycrystalline Cu1-xZnxGeO3 were measured to study the effects of nonmagnetic impurities on the spin-Peierls transition. The transition temperature drastically reduces upon Zn doping and the spin-Peierls state collapses around x=0.03. The Zn doping causes another phase transition in the samples with 0.02≤x≤0.08, which proved to be spin-glass-like. The present Letter provides the first study of the spin-Peierls system with impurities.

© 1993 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.71.4059
DOI:
10.1103/PhysRevLett.71.4059
PACS:
75.10.Jm, 75.40.Cx, 75.50.Ee
 
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