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−δ is consistent with an overdamped spin exciton located near the particle-hole continuum. We present predictions for the magnetic-field dependence of the resonance mode as well as its temperature evolution in those parts of the phase diagram where dx2−y2-wave superconductivity may coexist with an antiferromagnetic spin-density wave.
@article{arxiv.cond-mat/0702375,
title = {The resonance peak in the electron-doped cuprate superconductors},
author = {J. -P. Ismer and Ilya Eremin and Enrico Rossi and Dirk K. Morr},
journal= {arXiv preprint arXiv:cond-mat/0702375},
year = {2007}
}