TY - JOUR
T1 - Low-energy spin fluctuations in the ground states of electron-doped Pr1-xLaCexCuO4+δ cuprate superconductors
AU - Fujita, M.
AU - Matsuda, M.
AU - Lee, S. H.
AU - Nakagawa, M.
AU - Yamada, K.
PY - 2008/9/5
Y1 - 2008/9/5
N2 - Low-energy spin fluctuations have been investigated in the electron-doped Pr1-xLaCexCuO4+δ over a wide concentration range of 0.07≤x≤0.18, spanning from the antiferromagnetic phase to the heavily overdoped superconducting (SC) phase. The low-energy excitations exhibit commensurate peaks centered at the (π, π) position for all x. Our data show that the characteristics of the excitations, such as the relaxation rate and the spin stiffness, decrease with increasing x in the SC phase and disappear with the disappearance of superconductivity.
AB - Low-energy spin fluctuations have been investigated in the electron-doped Pr1-xLaCexCuO4+δ over a wide concentration range of 0.07≤x≤0.18, spanning from the antiferromagnetic phase to the heavily overdoped superconducting (SC) phase. The low-energy excitations exhibit commensurate peaks centered at the (π, π) position for all x. Our data show that the characteristics of the excitations, such as the relaxation rate and the spin stiffness, decrease with increasing x in the SC phase and disappear with the disappearance of superconductivity.
UR - http://www.scopus.com/inward/record.url?scp=51649121771&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51649121771&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.101.107003
DO - 10.1103/PhysRevLett.101.107003
M3 - Article
AN - SCOPUS:51649121771
SN - 0031-9007
VL - 101
JO - Physical Review Letters
JF - Physical Review Letters
IS - 10
M1 - 107003
ER -