Temperature Dependence of the Magnetic Excitation Spectra of YBa2CU2.9Zn0.1O6.75

Hiroshi Harashina, Shin ichi Shamoto, Takanori Kiyokura, Masatoshi Sato, Kazuhisa Kakurai, G. Shirane

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Neutron scattering measurements of magnetic excitations in YBa2Cu2.9Zno.1O6.75 (7”c< 10 K) have been performed. In contrast to the corresponding pure sample with the same oxygen number (Tc - 66 K) where no peak of the antiferromagnetic correlation was detected for excitation energies below 15 meV, we have observed clear scattering contribution in the same energy range at all temperatures studied. A detailed study of x”(co) at (tt, 7t) in this Zn-substituted sample suggests 1) an existence of the gap-like structure at high temperatures (100 K < r< 200 K) and 2) the enhancement of the spectral weight at low energies along with the loss of the itinerant nature of the electrons at low temperatures (r<50 K).

Original languageEnglish
Pages (from-to)4009-4015
Number of pages7
JournalJournal of the Physical Society of Japan
Issue number11
Publication statusPublished - 1993

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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