Fermi surface of the electron-doped cuprate superconductor Nd2−xCexCuO4 probed by high- field magnetotransport

Polaronic signatures in the optical properties of the electron-doped cuprate superconductor Nd2–xCexCuO4

Microwave Electrodynamics of the Electron-Doped Cuprate Superconductors Pr2−xCexCuO4−y and Nd2−xCexCuO4−y

The pairing state symmetry of the electron-doped cuprate superconductors is thought to be s-wave in nature, in contrast with their hole-doped counterparts which exhibit a d-wave symmetry. We re-examine this issue based on recent improvements in our electron-doped materials and our measurement techniques. We report microwave cavity perturbation measurements of the temperature dependence of the p...

Work supported in part by US Department of Energy contract DE-AC02-76SF00515. Analysis of the spectral function of Nd1.85Ce0.15CuO4, obtained by angle resolved photoemission spectroscopy

Samples of Nd2−xCexCuO4, an electron-doped high temperature superconducting cuprate (HTSC), near optimal doping at x = 0.155 were measured via angle resolved photoemission (ARPES). We report a renormalization feature in the self energy (“kink”) in the band dispersion at ≈ 50 − 60 meV present in nodal and antinodal cuts across the Fermi surface. Specifically, while the kink had been seen in the ...

Point contact spectroscopy of the electron-doped cuprate superconductor Pr2−xCexCuO4: The dependence of conductance-voltage spectra on cerium doping, barrier strength and magnetic field

We present conductance-voltage (G − V ) data for point contact junctions between a normal metal and the electron doped cuprate superconductor Pr2−xCexCuO4 (PCCO). We observe a zero bias conductance peak (ZBCP) for the under-doped composition of this cuprate (x = 0.13) which is consistent with d-wave pairing symmetry. For optimally-doped (x = 0.15) and over-doped (x = 0.17) PCCO, we find that th...

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

We report neutron scattering studies on two single crystal samples of the electron-doped (n-type) superconducting (SC) cuprate Nd2-xCexCuO4 (x=0.15) with T(c)=18 and 25 K. Unlike the hole-doped (p-type) SC cuprates, where incommensurate magnetic fluctuations commonly exist, the n-type cuprate shows commensurate magnetic fluctuations at the tetragonal (1/2 1/2 0) reciprocal points both in the SC...