The resonance peak in the electron-doped cuprate superconductors

Details The resonance peak in the electron-doped cuprate superconductors The resonance peak in the electron-doped cuprate superconductors

2007-02-15

arxiv.org/abs/cond-mat/0702375v3

Phys. Rev. Lett. 99, 047005 (2007)

Physics

Condensed Matter

Superconductivity

5 Pages, 4 Figures

Scientific paper

10.1103/PhysRevLett.99.047005

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 Pr$_{0.88}$LaCe$_{0.12}$CuO$_{4-\delta}$ 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 $d_{x^2-y^2}$-wave superconductivity may coexist with an antiferromagnetic spin-density wave.

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