Anomalous electronic structure and pseudogap effects in Nd1.85Ce0.15CuO4.
نویسندگان
چکیده
We report a high-resolution angle-resolved photoemission spectroscopic study of the electron-doped ( n-type) cuprate superconductor Nd1.85Ce0.15CuO4. 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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ورودعنوان ژورنال:
- Physical review letters
دوره 87 14 شماره
صفحات -
تاریخ انتشار 2001