Square vortex lattice at anomalously low magnetic fields in electron-doped Nd${}_{1.85}$Ce${}_{0.15}$CuO${}_4$

Abstract

We report here on the first direct observations of the vortex lattice in the bulk of electron-doped Nd${}_{1.85}$Ce${}_{0.15}$CuO${}_4$ single crystals. Using small angle neutron scattering, we have observed a square vortex lattice with the nearest-neighbors oriented at 45${}^{\circ }$ 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.

4 pages, 4 Figures, accepted for publication in Phys. Rev. Lett

References in corpus (27)

• Angle-resolved photoemission spectroscopy of the cuprate superconductors
• Phase diagrams of flux lattices with disorder
• Phase-sensitive Evidence for d-wave Pairing Symmetry in Electron-doped Cuprate Superconductors
• Doping dependent evolution of the electronic structure of La2-xSrxCuO4 in the superconducting and metallic phases
• Superconducting Gap Anisotropy in Nd${}_{1.85}$Ce${}_{0.15}$CuO${}_4$: Results from Photoemission
• Field dependence of the vortex structure in d-wave and s-wave superconductors
• GINZBURG-LANDAU THEORY OF VORTICES IN $d$-WAVE SUPERCONDUCTORS
• Effect of the vortex core on the magnetic field in hard superconductors
• Commensurate spin dynamics in the superconducting state of an electron-doped cuprate superconductor
• Field-angle Dependence of the Zero-Energy Density of States in the Unconventional Heavy-Fermion Superconductor CeCoIn5
• Direct evidence for an intrinsic square vortex lattice in the overdoped high-Tc superconductor La1.83Sr0.17CuO4+d
• Observation of a Triangular to Square Flux Lattice Phase Transition in YBCO
• Generalized London free energy for high-$T_c$ vortex lattices
• Magnetic and superconducting phase diagram of electron-doped Pr${}_{1-x}$LaCe${}_x$CuO${}_4$
• Reentrant vortex lattice transformation in four-fold symmetric superconductors
• Effective "Penetration Depth" in the Vortex State of a d-wave Superconductor
• Theory of equilibrium flux lattices in unconventional superconductors
• Low Temperature Behavior of the Vortex Lattice in Unconventional Superconductors
• Direct observation of the flux-line vortex glass phase in a type II superconductor
• Theory for Electron-Doped Cuprate Superconductors: d-wave symmetry order parameter
• Electron-Like Fermi Surface and Remnant (pi,0) Feature in Overdoped La1.78Sr0.22CuO4
• Temperature Dependence of the Flux Line Lattice Transition into Square Symmetry in Superconducting LuNi${}_2$B${}_2$C
• Hexagonal and Square Flux Line Lattices in CeCoIn5
• Novel vortex lattice transition in d-wave superconductors
• Non-universal pairing symmetry and pseudogap phenomena in hole- and electron-doped cuprate superconductors
• A small angle neutron scattering study of the vortex matter in La{2-x}Sr{x}CuO{4} (x=0.17)
• Field-induced hexagonal to square transition of the vortex lattice in overdoped La{1.8}Sr{0.2}CuO{4}

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