Spin dynamics of the electron-doped high-T(c) superconducting cuprates.
We show that a basic difference between the electron- and hole-doped cuprates is their proximity to two different quantum critical points in a 2D free fermion system on a square lattice and that the spin dynamics observed recently for the first time in the electron-doped Nd2-xCexCuO4, very different from that in the hole-doped cuprates, can be understood as a consequence of this effect.
Onufrieva
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Laboratoire Leon Brillouin, CE-Saclay 91191, Gif-sur-Yvette, France.
Pfeuty
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