2004/10/11 by R. Gilardi, J. Mesot, S. P. Brown +9
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Diffraction #Doping #Electron #Lattice (music) #Magnetic and transport properties of perovskites and related materials #Magnetic field #Neutron diffraction #Neutron scattering #Optics #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Scattering #Square lattice #Superconductivity #Vortex #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.93.217001
published as Phys. Rev. Lett. 93 (2004) 217001 · 4 pages, 4 Figures, accepted for publication in Phys. Rev. Lett
arxiv created 2004/10/11 · openalex publication_date 2004/11/15 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report here on the first direct observations of the vortex lattice in the bulk of electron-doped Nd1.85Ce0.15CuO4 single crystals. Using small-angle neutron scattering, we have observed a square vortex lattice with the nearest neighbors oriented at 45 degrees from the Cu-O bond direction, which is consistent with theories based on the d-wave superconducting gap. However, the square symmetry persists down to unusually low magnetic fields. Moreover, the diffracted intensity from the vortex lattice is found to decrease rapidly with increasing magnetic field.