Anomalous electronic structure and pseudogap effects in Nd_1.85Ce_0.15CuO_4

Details Anomalous electronic structure and pseudogap effects in Nd_1.85Ce_0.15CuO_4 Anomalous electronic structure and pseudogap effects in Nd_1.85Ce_0.15CuO_4

2001-07-12

arxiv.org/abs/cond-mat/0107244v1

Phys. Rev. Lett. 87, 147003 (2001)

Physics

Condensed Matter

Superconductivity

5 pages, 3 figures, RevTex, submitted Phys. Rev. Lett. December 21, 2000

Scientific paper

10.1103/PhysRevLett.87.147003

We report a high-resolution angle-resolved photoemission spectroscopic (ARPES) study of the electron-doped (n-type) cuprate superconductor Nd_1.85Ce_0.15CuO_4. We observe regions along the Fermi surface where the near-E_F intensity is suppressed and the spectral features are broad in a manner reminiscent of the high-energy ``pseudogap'' in the underdoped p-type (hole doped) cuprates. However, instead of occurring near the (pi, 0) region, as in the p-type materials, this pseudogap falls near the intersection of the underlying Fermi surface with the antiferromagnetic Brillouin zone boundary.

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