Evidence for a correlated insulator to antiferromagnetic metal transition in CrN.

@article{Bhobe2010EvidenceFA,
  title={Evidence for a correlated insulator to antiferromagnetic metal transition in CrN.},
  author={Preeti A. Bhobe and A. Chainani and Munetaka Taguchi and Tomoyuki Takeuchi and Ritsuko Eguchi and M. Matsunami and Kyoko Ishizaka and Yasutaka Takata and Masaki Oura and Yasunori Senba and Hirotada Ohashi and Yoshinori Nishino and Makina Yabashi and Kenji Tamasaku and Toshiyuki Ishikawa and Koshi Takenaka and Hidenori Takagi and S. Shin},
  journal={Physical review letters},
  year={2010},
  volume={104 23},
  pages={
          236404
        }
}
We investigate the electronic structure of chromium nitride (CrN) across the first-order magnetostructural transition at T(N)∼286  K. Resonant photoemission spectroscopy (PES) shows a gap in the 3d partial density of states at the Fermi level and an on-site Coulomb energy U∼4.5  eV, indicating strong electron-electron correlations. Bulk-sensitive high-resolution (6 meV) laser PES reveals a clear Fermi edge indicating an antiferromagnetic metal below T(N). Hard x-ray Cr 2p core-level PES shows T… Expand
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