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 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.
Ismer
J-P
JP
Max-Planck Institut für Physik komplexer Systeme, D-01187 Dresden, Germany.
Eremin
Ilya
I
Rossi
Enrico
E
Morr
Dirk K
DK