Neutron scattering study on electron-hole doping symmetry of high-T-c superconductivity

Citation
K. Yamada et al., Neutron scattering study on electron-hole doping symmetry of high-T-c superconductivity, J PHYS CH S, 60(8-9), 1999, pp. 1025-1030
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
ISSN journal
00223697 → ACNP
Volume
60
Issue
8-9
Year of publication
1999
Pages
1025 - 1030
Database
ISI
SICI code
0022-3697(199908/09)60:8-9<1025:NSSOED>2.0.ZU;2-O
Abstract
We review recent results of neutron scattering experiment on spin correlati ons for both hole-doped La2-xSr2CuO4+y and electron-doped Nd1.85Ce0.15CuO4y superconductors, For the former, hole-doping induces an incommensurate sp in density modulation along the Cu-O bonds. For the latter, we observed wel l-defined spin fluctuations in the superconducting phase (T-c approximate t o 18 K) for the first time. In contrast to the hole-doping, the electron-do ping induces no well-defined incommensurate spin modulation; the magnetic s ignal appears at ( pi, pi) with a q-width broader than in the as-grown anti ferromagnetic phase. For both systems a static magnetic order was observed in the superconducting state. (C) 1999 Published by Elsevier Science Ltd. A ll rights reserved.