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Phys. Rev. B 48, 3485–3490 (1993)

Neutron-scattering study of magnetic fluctuations in Zn-substituted YBa2Cu3O6.6

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K. Kakurai
The Institute for Solid State Physics, The University of Tokyo, Roppongi 7-22-1, Minato-ku, 106 Tokyo, Japan

S. Shamoto, T. Kiyokura, and M. Sato
Department of Physics, Nagoya University, Nagoya 464-01, Japan

J. M. Tranquada and G. Shirane
Department of Physics, Brookhaven National Laboratory, Upton, New York 11973

Received 6 April 1993; published in the issue dated 1 August 1993

Inelastic-neutron-scattering measurements of magnetic fluctuations in YBa2Cu2.9Zn0.1O6.6 as a function of temperature are presented. In this nonsuperconducting sample magnetic fluctuations at (π,π) are observed at all temperatures (10<T<200 K) and energies (2<E<12 meV) studied in the experiment. This finding should be contrasted to the situation in pure, superconducting YBa2Cu3O6.6, where the low-energy (E<5 meV) spin fluctuations are suppressed at low temperature leading to gaplike behavior.

© 1993 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.48.3485
DOI:
10.1103/PhysRevB.48.3485
PACS:
74.72.Bk, 75.50.Ee
 
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