Pulsed neutron-scattering study of an entire spin excitations in the electron-doped high-Tc superconductor

Masaki Fujita, Masaaki Matsuda, C. D. Frost, B. Fåk, Kazuyoshi Yamada

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We have investigated magnetic excitations of an electron-doped superconductor Pr0.89LaCe0.11CuO4 (Tc = 26 K) using pulsed neutron-scattering over a wide range of energy up to ∼180 meV. Spin fluctuations were found to persist around (π, π) reciprocal position at least up to ∼180 meV. With increasing the energy (ω) below 60 meV, peak-width broadens rapidly, while above this energy the width weakly depends on the energy. On the other hand, the scattering intensity shows a gradual decrease as the ω increase. However, no well-defined magnetic intensity was observed, where the peak-width saturates. The observed spin excitations in Pr0.89LaCe0.11CuO4 is compared with those in the hole-doped system from the viewpoint of dual structure of the spectrum.

Original languageEnglish
Pages (from-to)44-47
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume460-462 I
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2007 Sep 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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