Commensurate spin dynamics in the superconducting state of an electron-doped cuprate superconductor.

Title Commensurate spin dynamics in the superconducting state of an electron-doped cuprate superconductor

Magnetic resonance in the spin excitation spectrum of electron-doped cuprate superconductors.

We study the emergence of a magnetic resonance in the superconducting state of the electron-doped cuprate superconductors. We show that the recently observed resonance peak in the electron-doped superconductor Pr0.88LaCe0.12CuO4-delta is consistent with an overdamped spin exciton located near the particle-hole continuum. We present predictions for the magnetic-field dependence of the resonance ...

A photoemission investigation of the superconducting gap in an electron-doped cuprate superconductor

We have performed angle resolved photoelectron spectroscopy (ARPES) on the electron-doped cuprate superconductor Nd Ce CuO . Evidence is found for an anisotropic superconducting gap that is consistent with the existence of a 1.85 0.15 4 d-wave superconducting order parameter in the n-type cuprate superconductors.  2001 Elsevier Science B.V. All rights

1 Superconductivity and spin fluctuations in the electron - doped infinitely - layered high

We report Cu NMR studies on uniaxially aligned and unaligned powder samples of an electron-doped infinitely-layered high Tc cuprate superconductor Sr0.9La0.1CuO2 (Tc =42 K). We measured the nuclear spin-lattice relaxation rate 1/T1 up to 800 K. We found from the temperature dependence of 1/T1T that the wave-vector-averaged spin susceptibility is highly enhanced by spin-fluctuations in the norma...

Superconducting gap anisotropy in Nd1.85Ce0.15CuO4: results from photoemission.

We have performed angle resolved photoelectron spectroscopy on the electron doped cuprate superconductor Nd1.85Ce0.15CuO4. A comparison of the leading edge midpoints between the superconducting and normal states reveals a small, but finite shift of 1.5-2 meV near the ( pi,0) position, but no observable shift along the zone diagonal near ( pi/2, pi/2). This is interpreted as evidence for an anis...