TY - JOUR
T1 - Pulsed neutron-scattering study of an entire spin excitations in the electron-doped high-Tc superconductor
AU - Fujita, Masaki
AU - Matsuda, Masaaki
AU - Frost, C. D.
AU - Fåk, B.
AU - Yamada, Kazuyoshi
N1 - Funding Information:
A part of present work was performed under the UK–Japan Collaboration Program on Neutron Scattering and supported by Grant-In-Aid for Young Scientists A (17684016) and for Scientific Research, Creative Scientific Research, from Ministry of Education, Culture, Sports, Science and Technology.
PY - 2007/9/1
Y1 - 2007/9/1
N2 - 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.
AB - 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.
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U2 - 10.1016/j.physc.2007.03.279
DO - 10.1016/j.physc.2007.03.279
M3 - Article
AN - SCOPUS:34548173133
SN - 0921-4534
VL - 460-462 I
SP - 44
EP - 47
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - SPEC. ISS.
ER -