| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1518936 | Journal of Physics and Chemistry of Solids | 2006 | 5 Pages |
Abstract
We report high-resolution angle-resolved photoemission spectroscopy on electron-doped cuprate Nd2âxCexCuO4 to study the quasiparticle (QP) state in the vicinity of the Fermi level. Measurements of momentum dependence have revealed that the mass-renormalized QP state around (Ï, 0) continuously evolves into the high-energy correlation gap, which opens at the intersecting point of the Fermi surface and the magnetic zone boundary. We also observed that the QP spectrum shows remarkable temperature and Ce-concentration dependence in accordance with the spin correlation. These results indicate that the heavy-mass QP state in the electron-doped cuprate originates in the antiferromagnetic order/fluctuation.
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Authors
Hiroaki Matsui, Kensei Terashima, Takafumi Sato, Takashi Takahashi, Shancai Wang, Hongbo Yang, Hong Ding, Tetsushi Uefuji, Kazuyoshi Yamada,