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The resonance peak in the electron-doped cuprate superconductors

J. -P. Ismer·Ilya Eremin·Enrico Rossi·Dirk K. Morr
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Abstract

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$_{4-δ}$ 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 $d_{x^2-y^2}$-wave superconductivity may coexist with an antiferromagnetic spin-density wave.

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J. -P. Ismer, Ilya Eremin, Enrico Rossi, Dirk K. Morr. 2007-11-22. The resonance peak in the electron-doped cuprate superconductors. https://doi.org/10.1103/physrevlett.99.047005

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