TY - JOUR
T1 - Neutron-scattering study of spin correlations in electron-doped Pr 0.89LaCe0.11CuO4 single crystals
AU - Fujita, M.
AU - Kuroshima, S.
AU - Matsuda, M.
AU - Yamada, K.
N1 - Funding Information:
This work was supported in part by the Japanese Ministry of Education, Culture, Sports, Science and Technology, Grant-in-Aid for Scientific Research on Priority Areas (Novel Quantum Phenomena in Transition Metal Oxides), for Scientific Research (A), and for Encouragement of Young Scientists, by the Japan Science and Technology Corporation, the Core Research for Evolutional Science and Technology Project (CREST).
PY - 2003/10
Y1 - 2003/10
N2 - We have performed neutron-scattering measurements on the single crystals of electron-doped cuprate, Pr0.89LaCe0.11CuO 4-δ in order to study the relationship between spin correlations and the superconductivity. In the non-superconducting as-grown x = 0.11 sample, clear magnetic Bragg peak appears below 200 K, while no evidence of antiferromagnetic order was found in the oxygen-reduced superconducting one (Tc = 25.5 K). These results imply that superconductivity concomitantly appears with the degradation of a magnetic ordering by oxygen-reduced procedure. Furthermore, we observed clear commensurate low-energy spin fluctuations, at the antiferromagnetic zone center in both as-grown and reduced samples, analogous to the result for Nd 1.85Ce0.15CuO4. Therefore, commensurate spin fluctuations are robust against the electron-doping and is commonly exist in the electron-doped superconductors.
AB - We have performed neutron-scattering measurements on the single crystals of electron-doped cuprate, Pr0.89LaCe0.11CuO 4-δ in order to study the relationship between spin correlations and the superconductivity. In the non-superconducting as-grown x = 0.11 sample, clear magnetic Bragg peak appears below 200 K, while no evidence of antiferromagnetic order was found in the oxygen-reduced superconducting one (Tc = 25.5 K). These results imply that superconductivity concomitantly appears with the degradation of a magnetic ordering by oxygen-reduced procedure. Furthermore, we observed clear commensurate low-energy spin fluctuations, at the antiferromagnetic zone center in both as-grown and reduced samples, analogous to the result for Nd 1.85Ce0.15CuO4. Therefore, commensurate spin fluctuations are robust against the electron-doping and is commonly exist in the electron-doped superconductors.
KW - Electron-doped superconductor
KW - Neutron scattering
KW - Spin fluctuations
UR - http://www.scopus.com/inward/record.url?scp=0041689675&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0041689675&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(03)00750-0
DO - 10.1016/S0921-4534(03)00750-0
M3 - Conference article
AN - SCOPUS:0041689675
VL - 392-396
SP - 130
EP - 134
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - PART 1
T2 - Proceedings of the 15th International Symposium on Superconduc
Y2 - 11 November 2002 through 13 November 2002
ER -