TY - JOUR
T1 - Measurement of unique magnetic and superconducting phases in oxygen-doped high-temperature superconductors La2-xSrxCuO4+y
AU - Udby, Linda
AU - Larsen, Jacob
AU - Christensen, Niels Bech
AU - Boehm, M.
AU - Niedermayer, C.
AU - Mohottala, H.E.
AU - Jensen, Thomas Bagger Stibius
AU - Toft-Petersen, Rasmus
AU - Chou, F.C.
AU - Andersen, Niels Hessel
AU - Lefmann, Kim
AU - Wells, B.O.
PY - 2013/11/25
Y1 - 2013/11/25
N2 - We present a combined magnetic neutron scattering and muon spin rotation study of the nature of the magnetic and superconducting phases in electronically phase separated La2-xSrxCuO4+y, x=0.04, 0.065, 0.09. For all samples, we find long-range modulated magnetic order below T N Tc=39 K. In sharp contrast to oxygen-stoichiometric La 2-xSrxCuO4, we find that the magnetic propagation vector as well as the ordered magnetic moment is independent of Sr content and consistent with that of the "striped" cuprates. Our study provides direct proof that superoxygenation in La2-xSr xCuO4+y allows the spin stripe ordered phase to emerge and phase separate from superconducting regions with the hallmarks of optimally doped oxygen-stoichiometric La2-xSrxCuO4.
AB - We present a combined magnetic neutron scattering and muon spin rotation study of the nature of the magnetic and superconducting phases in electronically phase separated La2-xSrxCuO4+y, x=0.04, 0.065, 0.09. For all samples, we find long-range modulated magnetic order below T N Tc=39 K. In sharp contrast to oxygen-stoichiometric La 2-xSrxCuO4, we find that the magnetic propagation vector as well as the ordered magnetic moment is independent of Sr content and consistent with that of the "striped" cuprates. Our study provides direct proof that superoxygenation in La2-xSr xCuO4+y allows the spin stripe ordered phase to emerge and phase separate from superconducting regions with the hallmarks of optimally doped oxygen-stoichiometric La2-xSrxCuO4.
U2 - 10.1103/PhysRevLett.111.22700
DO - 10.1103/PhysRevLett.111.22700
M3 - Journal article
SN - 0031-9007
VL - 111
JO - Physical Review Letters
JF - Physical Review Letters
IS - 22
M1 - 227001
ER -