Abstract
We present triple-axis neutron scattering studies of static and dynamic magnetic stripes in an optimally oxygen-doped cuprate superconductor, La2CuO4+y, which exhibits a clean superconducting transition at Tc=42K. Polarization analysis reveals that the magnetic stripe structure is equally represented along both of the tetragonal crystal axes and that the fluctuating stripes display significant weight for in-plane as well as out-of-plane spin components. Both static magnetic order as well as low-energy fluctuations are fully developed in zero applied magnetic field and the low-energy spin fluctuations at ω=0.3-10meV intensify on cooling. We interpret this as an indication that superconductivity and low-energy spin fluctuations coexist microscopically in spatial regions which are separated from domains with static magnetic order.
Original language | English |
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Article number | 045138 |
Journal | Physical Review B |
Volume | 103 |
Issue number | 4 |
ISSN | 2469-9950 |
DOIs | |
Publication status | Published - 2021 |